Recently, I was able to finally visit Tonto National Monument in southern Arizona a short drive from Phoenix. Early April can be a beautiful time in the Sonora before the temperatures rise beyond the point of misery. Much of the desert was in bloom during the visit and the snakes were definitely awake.
Specifically, this short trip was to the Upper Cliff Dwelling, a 30-40 room structure located high on the hillside overlooking a large valley near the Salt River probably occupied from the 13th-15th centuries.
Guided hikes are available to the Upper Ruin from November through April on this easy 3 mile round trip.
The winds were really up and our guide lost his hat in a whirlwind. Luckily it was found down the mountain later by another group.