The Waking Stones
A megalith is just a set of standing stones—unless they’re actually members of an ancient stone race, reawakening in the 13th age! This full 13th Age Bestiary-style writeup has heroic, ambiguous, and villainous options that should fit into most any campaign.
The Waking Stones is the eleventh installment of 13th Age Monthly Vol. 1. You can buy it as a stand-alone PDF, or purchase the collected Volume 1 to get all 12 issues plus the Free RPG Day adventures Make Your Own Luck and At Land’s Edge!