Black and white lantern slide of Audie Merrill standing next to a sign reading "Tropico de Cancer" along a roadside in Mexico.

Black and white lantern slide of two automobiles on dirt road near Saltillo, Mexico. One of the cars appears to be stuck and is surrounded by a small group of people.

Black and white lantern slide of a stream of water along a street in Saltillo, Mexico.

Black and white lantern slide of Saltillo, Mexico.

Black and white lantern slide view of Saltillo Falls, looking west.

Black and white lantern slide view down Saltillo Falls, looking east.

Black and white lantern slide of the excavated terrace of the Cholula Pyramid site.

Black and white lantern (dark) slide of Mexican landscape with the volcanoes Popocatepetl and Itzaccihuatl in the distance.

Black and white lantern slide of Mexican landscape with the volcanoes Popocatepetl and Itzaccihuatl in the distance, looking southwest.

Black and white lantern slide of the Cholula Pyramid site, looking south.

Black and white lantern slide of the Cholula Pyramid site, with a 132km marker next to the road side.

Black and white lantern slide of the unexcavated site of the Cholula Pyramid, with the Nuestra Senora de los Remedios Church in the background.