Drones can be used for photogrammetry, which is the process of stitching photographs together to measure and map the earth's surface. Drones equipped with high-resolution cameras are able to capture detailed images of the area, which can be processed and combined to create a detailed map of the terrain.

There are a variety of uses for photogrammetry, including mapping, surveying, and land use planning. Photogrammetry can be used to create detailed maps of the terrain, including its elevation, slope, and features such as buildings, roads, and vegetation. It can also be used to measure distances, heights, and other quantities, such as the volume of stockpiles or the size of structures. In addition, photogrammetry can be used to create 3D models of the terrain and structures, allowing users to visualize the area in 3D and to create virtual fly-throughs.