At Oregon Caves National Monument, we observe unique ecosystems above ground in an old-growth forest and below ground in a cave system. These ecosystems blur in what is known as "twilight zones" of caves--the region of the cave where there is an opening to the forest, where light can penetrate the room. We find photosynthetic plants such as mosses in this area. Cave/Karst Systems
Learn more about caves and karst systems. Rivers and Streams
Learn more about rivers and streams at Oregon Caves. |
Last updated: June 5, 2018