Lava Rock

Annie was in Bristol today and has just endured the 2 hour commute home. Deep joy. She did see a beautiful sunset in the rear view mirror but the M4 isn't the place to stop for such photo opportunities.

I (Chris) had another routine day in the office, not even the highlight of some lunchtime sunshine like the last two days.

Tonight's blip could be a bit of cooling lava rock but it isn't! Can you guess what it actually is?