Utah Department of Transportation (UDOT) on Instagram: "Built nearly 100 years ago as the gateway to Bryce Canyon, these arches have faced a lot of wear from traffic and weather. To help protect them, we use drones, LiDAR, and starting soon—special sensors that will detect shifts or signs of erosion. LiDAR (light detection and ranging) is the technology you can see in this video. It creates a highly detailed 3D model of the arches, allowing us to track changes over time and spot potential issues