+ Geographically, the Pedreira de Itapevi consists of large, deep, excavated rock basins cut into the rugged hillsides of the Itapevi municipality, located within the Greater São Paulo metropolitan area. The physical terrain forms a massive hollow crater flanked by vertical, unstable granite cliffs that descend into flat, dirt-covered staging floors where seasonal rain pools can form. This closed, steep stone bowl triggers intense micro-airspace hazards, generating localized thermal air currents, unpredictable wind vectors, and sudden draft tunnels that can quickly destabilize smaller multirotor platforms. The industrial scale of the quarry walls creates a notable obstacle for satellite communications, leading to severe GPS signal shading and multipath reflection errors. This substantial telemetry interference poses a constant risk of signal drops, where any mechanical failure will send an aircraft crashing onto inaccessible rock ledges or rocky debris fields.