A view from inside the entrance of the Qasbeh Qanat in Gonabad, Iran—a UNESCO World Heritage site. This ancient underground aqueduct system, dating back over 2,500 years, is a marvel of engineering designed to bring water to the arid desert surface. The image contrasts the raw, excavated earth of the shaft with the intricate brickwork of the entrance structure, symbolizing the intersection of nature and human ingenuity.