I went there last summer and the site is large but not unwalkable. Maybe they could have opened it to tourists. Other than the nearby campground you have to drive down the mountain quite a bit to get to the nearest store/town.
The Observatory was a place I often found myself visiting at night, to enjoy star watching events and the dinner services were equally excellent and magical.
Fond memories. Sad to see it go.
Julian recently had a rather important geological/gemological discovery happen - crystals of emerald, bisected by citrine - yet it's all one and the same crystal, and it wasn't caused by the emerald breaking and citrine filling the fracture. The citrine acts as a sort of 'barrier' where you can see inverse concentrations of various elements on either side of the citrine.