From a 1980 Kenner Toy Fair catalog:
Look out, Rebel Snow Soldiers! Molded like snow peaks, this thrill-packed play environment looks like the ice-planet HOTH. Place the IMPERIAL SNOW STORMTROOPERS in strategic attack positions. For defense, press the ice-levers, and the action figures are knocked down in mock battle. There's even a plastic radar laser cannon for added action. But beware Rebels! The threatening All-Terrain Armored Transport - ATAT "WALKERS" - has a manually operated elevator which can be used to take up captured Rebel Action Figures or IMPERIAL STORMTROOPERS.
The Hoth Ice Planet Action Playset only consisted of a plastic
base and cardboard backdrop. The base of this playset was previously molded
in tan plastic for the Land of the Jawas Playset and was later converted again
into the Sears exclusive Rebel Command Center.
Additionally, the Hoth Ice Planet used an AT-AT backdrop that was virtually
identical in construction to the Sandcrawler of the Land of the Jawas. Instead
of the Escape Pod that was included with the earlier playset, the Hoth set contained
a radar laser cannon.
Moving the "battle action lever" will cause Han Solo to rotate and knock over the Snowtrooper figure. The elevator slides along a track that has plastic reinforcements along the sides. The interior of the AT-AT contains four footpegs to hold action figures.