The National Park Service trailguide for McKittrick Canyon starts with this,"McKittrick Canyon is one of the best places to witness the diversity of life found in the Guadalupe Mountains. This is an extremely scenic hike through a canyon that contains a year-round spring fed stream. It will introduce hikers to the extremely unique riparian woodland ecosystem. It is especially beautiful in fall when the big-tooth maples are turning various shades of red, orange, and yellow. This normally occurs in the last two weeks of October to the first week of November."
And wow, this year we had great color! You can view a slideshow of photos of the color in the canyon here.