Secrets Underground

QUEST

Saturday 18 February 2023  23:00 - 00:00 (60 mins)
Rob Nelson investigates the mysterious rocks at the bottom of Lake Michigan known as Underwater Stonehenge. Plus, the search for escape tunnels in Alcatraz. S1/Ep1

Secrets Underground (QUEST) Saturday 18 February 2023 23:00 - 00:00