The dunes from the park entrance road in spectacular clear air after an overnight dusting of snow at Great Sand Dunes National Park. Mount Herard (13 Geology December 16, 2022 2023 Colorado Geology Calendar We’ve been wanting to put together a calendar for some time now, and 2023 seems to be the right year! The geology of Colorado and its landscapes are as varied and as colorful as any place on the planet. And, yes, we think this collection of images from our staff—with…