The apocalyptic site, dubbed a 'doorway to hell', exists right here on Earth and has been burning since 1971 — only one person is known to have ever descended inside.

The 'Door to Hell' exists right here on Earth and has been ablaze since 1971 - there's only one known record of anyone ever ...

Unlike tourist-packed destinations, there are places so perilous that only a few dare to visit. The dangers come from violent ...