A trio of tourists navigates the multi-tiered staircase of the giant Structure I step pyramid, a large stone stele near its peak, surrounded by lush, green forest in the ancient Mayan ciy of Calakmul,
A trio of tourists navigates the multi-tiered staircase of the giant Structure I step pyramid, a large stone stele near its peak, surrounded by lush, green forest in the ancient Mayan ciy of Calakmul, Mexico.