Mysteries of the Abandoned

Alien Hell Portal (4x7)

Air date: May 16, 2019

A strange complex of tunnels on the grounds of a bizarre mansion were under lock-and-key for a century, and since its rediscovery, some believe its mysterious place is a gate to hell. Stories: 1) Villa De Vecchi, Rhodes, Greece; 2) Nuttallburg, West Virginia, USA; 3) The Initiation Well, Quinta da Regaleira, Sintra, Portugal; 4) Botallack and Levant Mines, Cornwall, UK