The Pedernal or Georgia's Mountain
A landmark in this part of the country, the Pedernal was immortalized by Georgia O'Keefe who is said to have claimed ownership of it - but I doubt the natives would concur. Everyone paints it and I have see Ann Templeton do at least 5 demos of it. Cliche it may be, but you have to paint it at least once, and I don't know how many times I've done it.
The cottonwoods are usually brilliant at this time of year and almost glow from within.
The top photo is an 8x10 I did about 4 years ago on an overcast day; the bottom version is a 6x8 I painted on Monday of last week and it was a sunny afternoon.