I find this show to be a real joke, not one of these joker are geologist and just about every episode instead of looking in the ground on the mountain they look to the sky firing rockets like children on 4th of July. Thinking that it will draw map to where to dig. The last season was a waste of time.If I was Brandon who supposedly writing the Check for these guys .I wouldhave fired the whole crew and get some real experts to start digging to get to the bottom of the mystery not wasting time firing rockets wasting money and time dragging out the show for them to collect their paycheck. In conclusion what in fact have they found in 4 season that couldn't be done by the end of season 2