6. ECHO BASE, HOTH. It took the Alliance Corps of Engineers, under Major Kem Monnon, two years to fashion Echo Base from the natural ice caverns below the frozen surface of Hoth. The result is a impressive both technically and aesthetically – a vast igloo as if fashioned by Piranesi. Alongside medical facilities a command centre and a large hangar, this eerily peaceful base includes perimeter defense trenches and v-150 Planet Defender ion cannon.