PHB Ranger Natural Explorer: Does Underdark terrain type mean any underground terrain?

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For the Player's Handbook Ranger (not Unearthed Arcana Revised Ranger), does the Natural Explorer terrain type of "Underdark" really mean any underground terrain, such as an underground cave? Of the listed terrain types (Arctic, Coast, Desert, Forest, Grassland, Mountain, Swamp, Underdark) there isn't really anything else that an underground cave would fall under, if not "Underdark."










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    For the Player's Handbook Ranger (not Unearthed Arcana Revised Ranger), does the Natural Explorer terrain type of "Underdark" really mean any underground terrain, such as an underground cave? Of the listed terrain types (Arctic, Coast, Desert, Forest, Grassland, Mountain, Swamp, Underdark) there isn't really anything else that an underground cave would fall under, if not "Underdark."










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      up vote
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      down vote

      favorite
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      favorite
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      3





      For the Player's Handbook Ranger (not Unearthed Arcana Revised Ranger), does the Natural Explorer terrain type of "Underdark" really mean any underground terrain, such as an underground cave? Of the listed terrain types (Arctic, Coast, Desert, Forest, Grassland, Mountain, Swamp, Underdark) there isn't really anything else that an underground cave would fall under, if not "Underdark."










      share|improve this question















      For the Player's Handbook Ranger (not Unearthed Arcana Revised Ranger), does the Natural Explorer terrain type of "Underdark" really mean any underground terrain, such as an underground cave? Of the listed terrain types (Arctic, Coast, Desert, Forest, Grassland, Mountain, Swamp, Underdark) there isn't really anything else that an underground cave would fall under, if not "Underdark."







      dnd-5e ranger terrain






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      edited Sep 4 at 3:21









      SevenSidedDie♦

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      asked Sep 4 at 2:22









      mdrichey

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          It depends on the setting.



          In some Dnd settings the Underdark is more than just a cave or an underground passage. It's a massive underground network that can potentially span an entire continent. It's kind of like another layer of the world.



          In other settings this layer may not exist, or be a lot smaller in scope. In this case it's up to your DM to decide what defines Underdark. It could be any underground area, an especially deep/dark underground area or a specific layer as above.



          In my current homebrew campaign setting I just define it as any large natural underground area. This brings it more inline with the other terrain types (Arctic, Coast, Desert, Forest, Grassland, Mountain, Swamp) and also means it is more likely to be useful for the ranger, as the party journeying to the Underdark proper is unlikely.






          share|improve this answer






















          • So does this mean that in settings such as the FR where the Underdark is well defined, a mere cave (such as Wave Echo Cave from the Lost of Mines of Phandelver published adventure) would not fall under any of the Natural Explorer terrain types?
            – mdrichey
            Sep 4 at 5:02






          • 1




            They are not counted as Underdark. I believe there is a even a passage describing a tunnel in Wave Echo Cave that specifically states it leads to the Underdark ie. Wave Echo Cave is not part of the Underdark. The cave is in the mountains though so I'd rule the terrain counts as Mountain in that example. My understanding is that everywhere (atleast on the material plane) has a terrain type.
            – RedTera
            Sep 4 at 5:12







          • 1




            @RedTera: The Underdark is not mentioned anywhere in LMOP.
            – V2Blast
            Sep 4 at 5:43






          • 1




            @RedTera I think I will need to ask a separate question to confirm whether it is correct that everywhere on the material plane has a terrain type, and that the correct terrain type for Wave Echo Cave is Mountain.
            – mdrichey
            Sep 6 at 21:43






          • 1




            @RedTera followup question asked here: link
            – mdrichey
            Sep 6 at 22:03










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          1 Answer
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          1 Answer
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          active

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          active

          oldest

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          up vote
          6
          down vote













          It depends on the setting.



          In some Dnd settings the Underdark is more than just a cave or an underground passage. It's a massive underground network that can potentially span an entire continent. It's kind of like another layer of the world.



          In other settings this layer may not exist, or be a lot smaller in scope. In this case it's up to your DM to decide what defines Underdark. It could be any underground area, an especially deep/dark underground area or a specific layer as above.



          In my current homebrew campaign setting I just define it as any large natural underground area. This brings it more inline with the other terrain types (Arctic, Coast, Desert, Forest, Grassland, Mountain, Swamp) and also means it is more likely to be useful for the ranger, as the party journeying to the Underdark proper is unlikely.






          share|improve this answer






















          • So does this mean that in settings such as the FR where the Underdark is well defined, a mere cave (such as Wave Echo Cave from the Lost of Mines of Phandelver published adventure) would not fall under any of the Natural Explorer terrain types?
            – mdrichey
            Sep 4 at 5:02






          • 1




            They are not counted as Underdark. I believe there is a even a passage describing a tunnel in Wave Echo Cave that specifically states it leads to the Underdark ie. Wave Echo Cave is not part of the Underdark. The cave is in the mountains though so I'd rule the terrain counts as Mountain in that example. My understanding is that everywhere (atleast on the material plane) has a terrain type.
            – RedTera
            Sep 4 at 5:12







          • 1




            @RedTera: The Underdark is not mentioned anywhere in LMOP.
            – V2Blast
            Sep 4 at 5:43






          • 1




            @RedTera I think I will need to ask a separate question to confirm whether it is correct that everywhere on the material plane has a terrain type, and that the correct terrain type for Wave Echo Cave is Mountain.
            – mdrichey
            Sep 6 at 21:43






          • 1




            @RedTera followup question asked here: link
            – mdrichey
            Sep 6 at 22:03














          up vote
          6
          down vote













          It depends on the setting.



          In some Dnd settings the Underdark is more than just a cave or an underground passage. It's a massive underground network that can potentially span an entire continent. It's kind of like another layer of the world.



          In other settings this layer may not exist, or be a lot smaller in scope. In this case it's up to your DM to decide what defines Underdark. It could be any underground area, an especially deep/dark underground area or a specific layer as above.



          In my current homebrew campaign setting I just define it as any large natural underground area. This brings it more inline with the other terrain types (Arctic, Coast, Desert, Forest, Grassland, Mountain, Swamp) and also means it is more likely to be useful for the ranger, as the party journeying to the Underdark proper is unlikely.






          share|improve this answer






















          • So does this mean that in settings such as the FR where the Underdark is well defined, a mere cave (such as Wave Echo Cave from the Lost of Mines of Phandelver published adventure) would not fall under any of the Natural Explorer terrain types?
            – mdrichey
            Sep 4 at 5:02






          • 1




            They are not counted as Underdark. I believe there is a even a passage describing a tunnel in Wave Echo Cave that specifically states it leads to the Underdark ie. Wave Echo Cave is not part of the Underdark. The cave is in the mountains though so I'd rule the terrain counts as Mountain in that example. My understanding is that everywhere (atleast on the material plane) has a terrain type.
            – RedTera
            Sep 4 at 5:12







          • 1




            @RedTera: The Underdark is not mentioned anywhere in LMOP.
            – V2Blast
            Sep 4 at 5:43






          • 1




            @RedTera I think I will need to ask a separate question to confirm whether it is correct that everywhere on the material plane has a terrain type, and that the correct terrain type for Wave Echo Cave is Mountain.
            – mdrichey
            Sep 6 at 21:43






          • 1




            @RedTera followup question asked here: link
            – mdrichey
            Sep 6 at 22:03












          up vote
          6
          down vote










          up vote
          6
          down vote









          It depends on the setting.



          In some Dnd settings the Underdark is more than just a cave or an underground passage. It's a massive underground network that can potentially span an entire continent. It's kind of like another layer of the world.



          In other settings this layer may not exist, or be a lot smaller in scope. In this case it's up to your DM to decide what defines Underdark. It could be any underground area, an especially deep/dark underground area or a specific layer as above.



          In my current homebrew campaign setting I just define it as any large natural underground area. This brings it more inline with the other terrain types (Arctic, Coast, Desert, Forest, Grassland, Mountain, Swamp) and also means it is more likely to be useful for the ranger, as the party journeying to the Underdark proper is unlikely.






          share|improve this answer














          It depends on the setting.



          In some Dnd settings the Underdark is more than just a cave or an underground passage. It's a massive underground network that can potentially span an entire continent. It's kind of like another layer of the world.



          In other settings this layer may not exist, or be a lot smaller in scope. In this case it's up to your DM to decide what defines Underdark. It could be any underground area, an especially deep/dark underground area or a specific layer as above.



          In my current homebrew campaign setting I just define it as any large natural underground area. This brings it more inline with the other terrain types (Arctic, Coast, Desert, Forest, Grassland, Mountain, Swamp) and also means it is more likely to be useful for the ranger, as the party journeying to the Underdark proper is unlikely.







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Sep 4 at 7:33









          NathanS

          15.4k369167




          15.4k369167










          answered Sep 4 at 3:16









          RedTera

          3206




          3206











          • So does this mean that in settings such as the FR where the Underdark is well defined, a mere cave (such as Wave Echo Cave from the Lost of Mines of Phandelver published adventure) would not fall under any of the Natural Explorer terrain types?
            – mdrichey
            Sep 4 at 5:02






          • 1




            They are not counted as Underdark. I believe there is a even a passage describing a tunnel in Wave Echo Cave that specifically states it leads to the Underdark ie. Wave Echo Cave is not part of the Underdark. The cave is in the mountains though so I'd rule the terrain counts as Mountain in that example. My understanding is that everywhere (atleast on the material plane) has a terrain type.
            – RedTera
            Sep 4 at 5:12







          • 1




            @RedTera: The Underdark is not mentioned anywhere in LMOP.
            – V2Blast
            Sep 4 at 5:43






          • 1




            @RedTera I think I will need to ask a separate question to confirm whether it is correct that everywhere on the material plane has a terrain type, and that the correct terrain type for Wave Echo Cave is Mountain.
            – mdrichey
            Sep 6 at 21:43






          • 1




            @RedTera followup question asked here: link
            – mdrichey
            Sep 6 at 22:03
















          • So does this mean that in settings such as the FR where the Underdark is well defined, a mere cave (such as Wave Echo Cave from the Lost of Mines of Phandelver published adventure) would not fall under any of the Natural Explorer terrain types?
            – mdrichey
            Sep 4 at 5:02






          • 1




            They are not counted as Underdark. I believe there is a even a passage describing a tunnel in Wave Echo Cave that specifically states it leads to the Underdark ie. Wave Echo Cave is not part of the Underdark. The cave is in the mountains though so I'd rule the terrain counts as Mountain in that example. My understanding is that everywhere (atleast on the material plane) has a terrain type.
            – RedTera
            Sep 4 at 5:12







          • 1




            @RedTera: The Underdark is not mentioned anywhere in LMOP.
            – V2Blast
            Sep 4 at 5:43






          • 1




            @RedTera I think I will need to ask a separate question to confirm whether it is correct that everywhere on the material plane has a terrain type, and that the correct terrain type for Wave Echo Cave is Mountain.
            – mdrichey
            Sep 6 at 21:43






          • 1




            @RedTera followup question asked here: link
            – mdrichey
            Sep 6 at 22:03















          So does this mean that in settings such as the FR where the Underdark is well defined, a mere cave (such as Wave Echo Cave from the Lost of Mines of Phandelver published adventure) would not fall under any of the Natural Explorer terrain types?
          – mdrichey
          Sep 4 at 5:02




          So does this mean that in settings such as the FR where the Underdark is well defined, a mere cave (such as Wave Echo Cave from the Lost of Mines of Phandelver published adventure) would not fall under any of the Natural Explorer terrain types?
          – mdrichey
          Sep 4 at 5:02




          1




          1




          They are not counted as Underdark. I believe there is a even a passage describing a tunnel in Wave Echo Cave that specifically states it leads to the Underdark ie. Wave Echo Cave is not part of the Underdark. The cave is in the mountains though so I'd rule the terrain counts as Mountain in that example. My understanding is that everywhere (atleast on the material plane) has a terrain type.
          – RedTera
          Sep 4 at 5:12





          They are not counted as Underdark. I believe there is a even a passage describing a tunnel in Wave Echo Cave that specifically states it leads to the Underdark ie. Wave Echo Cave is not part of the Underdark. The cave is in the mountains though so I'd rule the terrain counts as Mountain in that example. My understanding is that everywhere (atleast on the material plane) has a terrain type.
          – RedTera
          Sep 4 at 5:12





          1




          1




          @RedTera: The Underdark is not mentioned anywhere in LMOP.
          – V2Blast
          Sep 4 at 5:43




          @RedTera: The Underdark is not mentioned anywhere in LMOP.
          – V2Blast
          Sep 4 at 5:43




          1




          1




          @RedTera I think I will need to ask a separate question to confirm whether it is correct that everywhere on the material plane has a terrain type, and that the correct terrain type for Wave Echo Cave is Mountain.
          – mdrichey
          Sep 6 at 21:43




          @RedTera I think I will need to ask a separate question to confirm whether it is correct that everywhere on the material plane has a terrain type, and that the correct terrain type for Wave Echo Cave is Mountain.
          – mdrichey
          Sep 6 at 21:43




          1




          1




          @RedTera followup question asked here: link
          – mdrichey
          Sep 6 at 22:03




          @RedTera followup question asked here: link
          – mdrichey
          Sep 6 at 22:03

















           

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