Sinkholes: Swallowed Alive

QUEST

Saturday 1 December 2018  07:00 - 08:00 (60 mins)
These geological time bombs are ticking beneath at least 20 per cent of America's surface. Dive into the bizarre and growing phenomenon sweeping the states and beyond.

Sinkholes: Swallowed Alive (QUEST) Saturday 1 December 2018 07:00 - 08:00