Tue 8 Mar, 2016 02:39 pm - Here are better pictures, it's about the size on a tennis ball. The middle layer is more porous and the colours are grey, black, light grey, white, back to grey. There are some shells in it as... (view)
Sat 5 Mar, 2016 07:40 pm - I found it at the beach and I don't know anything about geology and was wondering if there was anything interesting I could learn from it.... (view)
