We made a trip up to Laguna Miscanti. It is at serious altitude, even higher than El Tatio, but we were a bit acclimatised now. It was early spring but there was a lot of snow on the ground, and we couldn't drive to the lake shore. We stopped a little way down the road, and hiked for half an hour or so across the snow to get there. We powered ahead of the less acclimatised travellers and made it to the shore first.