RB-130 The Mountain that Moved

Stumpy and Henry go fishing on Old Thunderhead. Strange sounds start coming from the mountain. Then a seismologist arrives to investigate strange readings coming from the mountain. Earthquakes trap Henry and Stumpy and threaten their lives. Then Old Thunderhead actually begins to move, leaving huge chasms and blocking all the mountain's roads. Bill must find a way to rescue his friends before it's too late.