VIDEO: What it looks like inside an active volcano

This is incredible footage

This video will warm you right up if you're feeling any way cold.

Uploaded to Vimeo by Sam Cossman, it shows a bunch of intrepid explorers who venture to the Matrum Volcano in Vanuatu in the Pacific Ocean.

And against very dramatic music they get up close and personal with the raging, active volcano.

It's pretty incredible.

Apocalyptic.