A new drone video shows a slow-moving landslide on Yakima’s Rattlesnake Ridge. According to the Washington Department of Natural Resources to slide spans roughly 20 acres of land moving at a speed of 1 and 1/2 feet per week. The landslide slowly travels South near Union Gap which is about 3 miles south of Yakima. Geologists use a drone to closely monitor the event by stitching together drone images to create a 3D model of the slide’s progress.

expand full story