Black and white photograph of a forest area from above with a large mound, possibly a pyramid, visible in the distance, taken at Uxmal, Mexico.

Black and white photograph of a forest area from above with a large mound visible in the distance, taken at Uxmal, Mexico.

Black and white photograph of a forest from above.

Black and white photograph of a forest from above, taken at Uxmal, Mexico. Field grass is visible in the foreground.

Black and white photograph of the Labna ruins of a large stone building. Carvings are visible on some of the walls.

Black and white photograph postcard of a stone structure from above with three walls visible. Another stone structure is visible in the distance and is labeled "Ruin" on the photograph. Another label on the image reads "Aguada Tree."

Black and white photograph postcard of a stone structure in a forest. A stone wall is visible with stone triangle formations repeating along the top of the wall. The structure is viewed at an angle.

Black and white photograph of a stone structure in a forest. A stone wall is visible with stone triangle formations repeating along the top of the wall. Another stone structure is visible in the distance.

Black and white photograph of landscape of the northwest taken from Adivino (Pyramid of the Magician) in Mexico. Part of the Adivino pyramid is visible in the image. Two stone walls are with carvings are visible.

Black and white photograph of the ruins of a stone, two-story building with multiple doors in the stone structure. A dirt path leads up to the structure with smaller structures on either side of the path. The photo is taken looking through a…

Black and white photograph of the ruins of a stone building. Five doorways are visible on this side of the structure with cloth hanging to form doors. A smaller structure is visible on top of the main structure, and carvings are visible on every area…

Black and white photograph of the ruins of a stone structure with multiple doors along the side of the structure. Carvings are visible in parts of the stone.

Black and white photograph of a mountain landscape behind foliage.

Black and white photograph of a forest landscape with mountains in the background.

Black and white photograph of a field of grass in front a forest.

Black and white photograph of trees on a hill with field grass and rocks in the foreground of the image.

Black and white photograph of a forest landscape with several mountains looking north from Sayil.

Black and white photograph of a forest landscape looking south from Sayil. Mountains are visible in the distance.

Black and white photograph of a small grass-roof hut with an automobile parked beside it in front of a forest. Mountains are visible in the distance.

Black and white photograph of a forest landscape looking west from Sayil. Mountains are visible in the distance.

Black and white photograph of a Sayil man standing in front of an automobile. A box and a basket are visible on the ground in front of the car, and a hat is set on top of the hood of the automobile.

Black and white photograph of the ruins of a tiered stone temple. Partially collapsed stone stairs are visible at the front of the structure.

Black and white photograph of a stele, or upright carved stone monument, laying on its side in Sayil.

Black and white photograph of a broken stele, or carved stone monument laying on the ground in Sayil.