Tyrannimated Monsters in the Valley of Gwangi

Stuttering pterodactyls
are scre-scre-screeching overhead,
the echo rings along the stony canyon walls
as cowboys thunder into the valley,
six-guns and lassoes,
and repeaters at the ready.

In this isolated valley at the desert's edge
reptilian relics are preserved
in the retro-future vision of Saint Harryhausen.
In this valley, by a confusion of scale
impossible rear-projected monsters
succumb to the guns of horse riding heroes.