We’re two brothers obsessed with building extreme underground bunkers in the most challenging environments on earth.

From remote islands to mountains and deserts, we push our limits to design and construct real survival shelters — fast, efficient, and built to last.

Every season, we take on a new challenge:
20 Days. One Location. No Excuses.

If you love survival builds, underground homes, off-grid living, engineering challenges, and extreme construction projects — you’re in the right place.

New builds. Real pressure. No shortcuts.

Subscribe and follow the journey below ground.