These are hardy kids and that area keeps patagonia sierra trading post and REI in business. It snows there is April / May. 50'sa nd 60's is warm for there. The town they live in - Truckee - is inside the Forest. This area of the gathering is remote, dark-dark, no lights, no electricity etc And it's not so much to hide from authorities as it is that it is beautiful amazing place there are no words. I would definitely not perceive this a party analagous to a house party or a party at what one would think of as a 'campground'. This area is remote. The area is unique. Cell service is not always avail. It's pure darkness at night, except for stars and moonlight, beautiful. Fire ban so no fires were safe to have that night.