What is considered a geological find &who do I contact
We are digging for our foundation for our new home and we found what appeared tobe a cave. We kept digging ang moving large rocks and found something odd. It appears there had been a large ledge that has moved and you can see on for at least 17 feet(measured with a tape) We don't know if it is fault line or not. Is it something important that we have to call some one? We really don't know what are next move is. Do we fill it in or what. I have pictures but don't know who to send them to. Thanks