8°C, clear sky with brisk W wind and cold.

https://www.mapmyride.com/workout/3279276373

Here’s a first, an off-road ride in the dark . The hard contrast from the light make ruts and pits easy to spot. Last night’s rain made the surface quite squelchy, that back wheel didn’t always follow the front. I did not fall.

It’s been a fun day. First thing, I visited a geology muse in Birmingham, The Lapworth Museum. This fossil as a cast, you can see that in close-up. Bits of white plaster show between the grey. I think the grey is graphite powder that was rubbed in.

Anyway, Lapworth us a well laid out museum with plenty of interesting exhibits. I highly recommend it. There is a rock wall made of samples and a key. I played the game of guessing and then looked up each type to make a score. I got about 1/3 correct. Clearly, I need to read up on peridotite.