Thought I'd add a little info in case any of you are planning on going out to Chaco. We went in the middle of March. Chaco is up on the plateau and it can still be pretty cold that time of the year. The day we arrived the high was in the low fortys and that first night it was down in the teens. Oh and the wind was blowing sustained at 30 and gusting to 50. And there was also about an inch of snow. So like the Boy Scouts, you should be prepared .