Thursday, January 15, 2015

Interesting rock from St. Paulo-Brazil

Reader Dr Joseph writes that this was found in a field inside the town. Any comments?


pwax said...

The polish looks man made.

Tim MacSweeney said...

How big is it anyway?

pwax said...

Can you guess? I thought it an interesting example of how scale is deduced from subtle things. Here, the fabric appears to be a good quality cotton sheet. The dimensions of the folds suggests this is a large heavy rock.
Maybe I am wrong. I am guessing 11" top-to-bottom.