Highs and Lows
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Guadalupe Mountains - High desert scenery with great hiking + cool fossils. Panoramic views from the peak.
Carlsbad Caverens - WOW! I didn't have much expectation for this, but it left me slack-jawed. Spent an ENTIRE day touring through HUGE, high-ceilinged, highly-decorated caves after entering down through the natural entrance (recommmended).
White Sands - Deserved more time, so we went back and spent an intensely-colored sunset, night under the stars + sunrise amidst the dunes
Here's a "link" to more photos