The day began with mottled clouds that later burned off. No friendly sand to walk in, just acrid mud dust, with now and then a stiff, dried place where a cow had pissed. We hiked down terrifying deep arroyos whose walls, scored by mud-laden runnels, were poised to collapse.

Mudstone concretions: eyeballs and entrails lay in drifts on the yellow-red dirt. We came across two half-buried spheres, both about twelve feet in diameter, like the backs of two huge skulls: Baba Yaga and her daughter.

*