travertine water formation - 3

america basin beauty calcium carbonate cascade cascades county destination elliston fall falls famous fed flow flowing fork formation formations freshwater geology heritage hike hiking horizontal lakes landmark landscape lime limestone location majestic mineral minerals montgomery natural nature north park parkland phenomenon place pool preserve ridge river roanoke rock sandtone scenic shale spring springfed springwater states stream trail trails travertine unique united usa valley vegetation virginia walk walking water waterfall waterfalls watershed wilderness