Pluto's Cave is a lava tube north of Mt. Shasta, California, about 1/2 3/4 miles in length. It is 190, 000 years in age & was discovered in 1863, however prehistoric use of the cave is evident. John Muir visited the cave sometime during 1874 1875 & in the early 20th century it was used by the Improved Order of Red Men (as indicated by their graffiti). There are a few collapse pits & this skylight, which is perhaps the prettiest part of the cave as a beam of winter sunlight passes through the suspended dust into the darkness. Like other caves in the area, graffiti & vandalism has taken their toll at this locality. The surrounding area has homes that are packed w/ marijuana farms (now that it's legal here). More info here: https://en.wikipedia.org/wiki/Pluto%27s_Cave
![Vue panoramique à 360° de Pluto's Cave puits [1]](https://l13.alamy.com/360fr/pn5h26/plutos-cave-puits-1-pn5h26.jpg)
