So... there we were minding our own business, when we come across:

It was a mock up of the descent stage of the Mars Polar Lander. The team were trying to show that, if the craft had landed, that the instruments would have worked.

They'd set up shop in 20 Mule Team Canyon.

After a long day we headed up Towne Pass to head for Ridgecrest. Looking back down the pass, we saw a great sunset: