The mission takes place in the middle of a vast ocean of lava. Each base is made up of 3 structures, connected by a central platform. The flag is in one of the structures, the vehicle station is in another, and the third houses dual inventory stations. The flag is wide open, so the defense had better be on their toes.
Between the bases are several large rocks jutting out from the lava. These make good intermediate landing spots for the flag runners. They also make good places to die at the hand of the enemy snipers. For this reason, many flag cappers choose to make use of an air vehicle to get across the map. Just watch out for enemy missles, since there are no hills to hide behind.
With a good defense, your team can keep the enemy cappers at bay for quite some time, due to the shortage of offensive routes caused by the surrounding lava. This map is a bit slow with any fewer than 8 players, but with 8 or more, it's a great deal of fun. Best of all, it's server-side so you can put this mission into your rotation without fear of losing your players.