This ruin is in Ban Ku, in A. Bua Yai, in Nakhon Ratchasima. You should go north along Route #2 from Nakhon Ratchasima, and then turn to the west. Then you can see this ruin in Wat Ban Ku. Inside of the main tower of this ruin. Is it Yoni? or a pedestal? A chichen was in it. Possibly does it hold even any eggs?