Drone footage of Collapse Arecibo Observatorymain

Credit: Courtesy of the Arecibo Observatory, a U.S. National Science Foundation facility. This video, that starts with a view of the top of Tower 4, was taken from the vantage point of an Arecibo Observatory drone, utilized for monitoring the condition of Tower 4 support cables. Four cables are seen in the center of this video. The top cable does not support the telescope platform, but instead supports the catwalk described in the narrative for the previous video. The three lower cables are, from left to r