So....am I standing on a dike or on the material left over from the excavation of a trench? Maybe both. Both of the features affect the flow of water and salt on the playa. Whatever I'm standing on, it was rock solid. However, as I discovered soon after taking this photo, the slope leading into the trench was not as solid, which made for a tricky ascent out of the trench.

This spot is about half a mile (0.8km) south of the end of
the curving finger of Floating Island.