You've seen the octagon on the beach. You've seen the insane fights.
But you've never seen exactly HOW the UFC transformed Yas Island in Abu Dhabi into "Fight Island" in the thick of a global pandemic ... until now!!
It's all part of "UFC Fight Island: Declassified" -- a 4-part series on ESPN+ (premieres today) featuring some incredible behind the scenes footage showing how Dana White and his team successfully built a secure city to keep MMA alive while every other major sport was shut down.
HOW IT ALL STARTED
Remember, Dana first revealed "Fight Island" to TMZ Sports back in April (we actually suggested the name "Fight Island").