Whomever this skeleton belonged to met with an unfortunate end. You can feel the taint of planar earth in the area around this crater. It seems the Golden Maw have left Ritual Piles, rigged to explode if tampered with, all over Fractured Plain.
Ritual Piles that explode with planar energy if someone messes with them? What a novel concept. You have to respect ingenuity, even in your enemies. Hopefully the clever creature that devised those things is out of ideas now.