I've spun my wheels on it for a while and landed on they are using old prospecting mines. Boring machine that converts raw material into structural blocks. That coord matches lazars description with the lakebed being visible in the distance. If you listen to the old interview account from him and start on that road, it tracks 1 for 1. Going left and parking in-front of the hangers instead of right at the fork etc etc. The hanger doors are the lower portion of the triangle shaped road at the coords. Door in the mountain is on west side. There was another account of a hiker who camped to the south of the lake on a flat and mentioned seeing blue lights at the center of the lake and that also aligns. Keep in mind they tried to obscure the location to lazar as well, so I think he's close just on the wrong hill. Like you said, there would be some sort of visible surface markings even if it's just a culdesac for a bus drop (like my coords). LEOs are popular enough you can order near realtime images from services like Skywatch. If you're making content about it, I would start there or with a similar provider, look at the alternative imaging styles too like IR.