Jonathan Roberts, cartographer for Wrath of the River King and Adventures in the Hyborian Age, presents the Ice Temple. This multi-page PDF allows you to print out the battlemap at a 1 inch=1 square-scale as a letter-format map and is also available in a printer-friendly light grayscale version.
The corridor leads out onto a massive frozen waterfall. A massive dragon is icebound and trapped within. The waterfall appears to have been hollowed out, creating an immense temple of ice suspended over a vertigo-inducing drop.