Here's a different VALENTINE -- of RED YELLOW LIGHT showcased through the opening of Antelope Canyon. Antelope Canyon is the most-visited and most-photographed slot canyon in the American Southwest, located on Navajo land near Page, Arizona USA.
Antelope Canyon may be the most striking slot canyon. A slot canyon is a narrow canyon sliced through a mesa by the forces of nature. Some canyons measure < a yard across at the top, but drop 100 feet or more from the rim to the bottom.