The much discussed conversation of where the renowned Stonehenge rocks in Britain came from appears to be over thanks to the work of two archaeologists.

According to the BBC Monday, National Museum Wales’ Dr. Richard Bevins and Leicester University’s Dr. Rob Ixer conformed the exact origin of the rocks after nine months of intense research.

The experts were able to find a 99% match with rock samples from Pembrokeshire, Wales with the rhyolite debitage rocks at Stonehenge. Ixer called their discovery, “quite unexpected and exciting.”