GeologyRocks

Hi,

I'm new  here and looking for a bit of expert advice.  I spend a bit of time roaming round Northumberland visiting Iron Age sites and I wondered if anyone could say what natural processes might have created a rock feature I found last month.

I think the rock type is a coarse sandstone but can't be sure.  The rock certainly release coarse grains if you rub hard with a finger/stick.

The full context is described at http://www.themodernantiquarian.com/site/11448/beanley_plantation_settlement.html.