Mystery at Blind Frog Ranch S05E01 - The Flooded Tunnel

In the season premiere, Chad dives deep into an underground passage, discovering artifacts and a potential way through to the keyhole chamber. Meanwhile, geologist Eric Drummond returns from Ohio with intel on how to drill around the meteorite on the ranch. But a midnight intruder on the property digs up an even bigger mystery, putting the team on high alert and impeding their efforts.