Wakulla Springs, by Andy Duncan and Ellen Kages

Tor, 2013, 99 pages. Available online at tor.com.

Wakulla Springs. A strange and unknown world, this secret treasure lies hidden in the jungle of northern Florida. In its unfathomable depths, a variety of curious creatures have left a record of their coming, of their struggle to survive, and of their eventual end. Twenty-five thousand years after they disappeared from the face of the Earth, the bones of prehistoric mastodons, giant armadillos, and other primeval monsters have been found beneath the seemingly placid surface of the lagoon. The visitor to this magical place enters a timeless world of mystery.