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In page Land of the Giants:

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In 1968, Aurora Plastics Company produced two plastic model kits based on the series: Land of the Giants was the title of a diorama depicting a giant snake attacking characters Steve Burton, Betty Hamilton and Dan Erickson, who uses a giant safety-pin as a spear.[11] The second kit was a model of the Spindrift, released as Land of the Giants Space Ship, instead of using the proper name for the vehicle.[12]