This was recorded on a calm summer night beside Sugar Creek in the Sugar Creek Research Natural Area, which is located within the Russian Wilderness, Klamath National Forest, Siskiyou County, California. The creek flows down the east side of the Salmon Mountains, a subrange of the Klamath Mountains, in far northern California. The creek was low for this time of year, owing to a meager snowpack that had already melted entirely.

The Sugar Creek Research Natural Area is a unique and special place. According to the U.S. Forest Service it was created "primarily to preserve the richest known assemblage of conifers in the world", in an area that has "essentially remained unchanged by humans since before the European colonization of California".

You can learn more about it here-

https://research.fs.usda.gov/psw/rnas/locations/sugar-creek