Yellowstone National Park: Mud Volcano Area

This is a dynamic thermal area where mud and hot gases (sulfur) bubble along close to the surface.
The following music was used for this media project:
Music: Spring Thaw by Kevin MacLeod
Free download: https://filmmusic.io/song/4409-spring-thaw
License (CC BY 4.0): https://filmmusic.io/standard-license