Jeep ridgerunners' holiday run from Yakima, where it is 100 degrees, to the snow-covered Cascade Mountains

Title Card: "Jeep Holiday 'Ridgerunners' Beat the Heat" superimposed over jeeps up ridge / LS long line of jeeps on top of mountain / MS line of jeeps on mountain / CU jeep having a hard time climbing/ CU jeep failing to make climb / CU men pushing jeep / CU jeep to camera / LV jeeps out of trees into clearing, hits snow covered ground / MS people are wearing light summer playsuits on jeeps / LS and CU jeeps across snow, to camera, skidding / jeeps come to stop in snow / women in bathing suits and playsuits and men in jeans and bare chested, throw snowballs / another view of women in bathing suits and playsuits and men in jeans and bare chested as some throw snowballs into camera / WS jeeps to camera pulling people on sleds, women in bathing suit falls off / MS jeeps leaving snow-covered area / MS jeeps across mountain ridge, pretty scene, dust / Note: exact day not known