I've had the wonderful fortune to visit various amazing places. Sometimes I brought recording equipment and caught some sounds. I have not published any of this material, yet. Some made lush ambient backdrops for songs. There are so many wonderful records of nature out there that capture a moment in time and in a place. Whale and frog songs are music to my ears....
One really cool thing I like to do is to sample a river in many places along it's course, then create a track that takes you for a ride down the stream, blending one sample into another to convey that flow and power.
a cave at Silver Falls, Oregon: