Snowflakes are gorgeous. Only wish I could see them up close like this when they fall. "Russian photographer Alexey Kljatov has created an ingenious and inexpensive DIY camera rig capable of capturing excellent close-up pictures of snowflakes.
Ammonites are an extinct group of marine invertebrate animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs are more closely related to living coleoids than they are to shelled nautiloids such as the living Nautilus species.
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.
A group of cavers descends into Ellison's Cave far under Pigeon Mountain in northwest Georgia. The cave's "Fantastic Pit," seen here, is the deepest cave drop in the continental United States at a staggering 586 vertical feet.