A few weeks ago I joined one of the Aconcagua expeditions for a few days. Strangely enough we had a big snowblizzard already in first camp, Confluencia (3300m/11,000ft). But in the evening it cleared wonderfully to show the Milky Way, something I can never see from y home city due to the light pollution.
This was taken with a long exposure, the tent was actually not lit, nor from the inside or from the outside, just by the stars and some light from the kitchen tents. But halfway during the exposure, somebody walked behind the tent, into and out of the frame, wearing a headlight. You can see his cadence in the long light sinusoid line :)