Manta Force Base
This Battle Fortress was built when Manta Force landed on the planet they wanted to colonize, it was to be a base of operations for building the colony and fighting Red Venom. It has a rear area for storage, and three platforms for ship's to land on. They also have pressure pads so enemy ships can fire at them and make the shis explode.
Please see below for some pictures
 
Manta Force Base Manta Force Base Manta Force Base Manta Force Base
Manta Force Base Manta Force Base Manta Force Base Manta Force Base
Manta Force Base Manta Force Base Manta Force Base Manta Force Base