Megamaze
From Transformers Wiki
On the remote Carob Island in the Pacific, there exists an extensive underground Decepticon base. The megamaze, as it is called, serves as a secret hideout for Megatron, from where he can coordinate his most recent dastardly plot.
Fiction
Deadly Paradise
Megatron discovered Madame Cee, a technological genius living in seclusion from the rest of the human race on Carob Island. Seeing potential to be exploited, he set up a base of operations on the island, and began to coerce Madame Cee into building Autobot duplicates for him. Some time later, a search party of Autobots, led by Prowl travelled to the island after tracing one of the duplicate's origin to the place. They eventually made their way to the underground base, only to become hopelessly lost in the labyrinth. The inevitably stumbled into a Decepticon trap, and found themselves imprisoned in a cage. After discovering Megatron's plan to create more Autobot doppelgangers, Prowl managed to free his comrades from the cage by goading Rumble into using his earthquake-inducing abilities. The base being underground meant that the whole area was thrown into discord, with stalactites falling down from the ceiling. Megatron escaped by using a secret passage out of the base, claiming that the Autobots would never find their way out of the network of corridors he had built. Thankfully, Ratchet's lubricant holder had been punctured earlier in the day, leaving behind a trail which the Autobots were able to follow back outside. Deadly Paradise