Bald Mountain airport, east of Talkeetna.
Hard to make. Big slope, small strip. The radio telescope is not suposed to be here, it's a private owned airstrip, probably but the place was looking like a perfect scientific station so...
According to FAA informations, this place is a bit dangerous : "
COURSE GRVL SFC CONTAINING ROCKS UP TO 4 INCHES / BEAR & MOOSE OCCASIONAL ON & INVOF ARPT". In fact, even for the Cessna, it's a short runway