Adder's Lair is a race track from Sonic & All-Stars Racing Transformed and the second track of the Arcade Cup, representing the Golden Axe series.
It is set in Death Adder's lair; a devilish valley with an active volcano, with chunks of the track destroyed at every turn, changing its layout. The race begins with everyone in boat form on a river of lava. When they go ashore, snakes appearing in ancient ruins surrounding a statue of Death Adder. At the end of the track they return to the river of lava over a waterfall across the valley where it all starts.
- The player can see a giant skeleton with its hands opened outward. This is a reference to the character select screen from the original Golden Axe game.
- The music is a remix of The Wilderness from Golden Axe.