A mysterious cavern beneath the earth

Before the bank burned down on this site, there was a furniture store and it appears the oil tank belonged to them but it's still not clear how long it'll take to clean it all up. We are finding new things every day...today the construction crew discovered a deep cavernous space that extends to the adjoining office of the Community Center. We are working with the state to alleviate the problems and hope to resume actual construction soon. However this will delay our progress...