The saguaro has been described as the monarch of the Sonoran Desert.
Description and photographs of both sections of the park, east and west of Tucson.
Official NPS site. Includes visitor information and a teacher's guide to the desert ecology of the ...
Virtual walking tour of this Sonoran desert park in southern Arizona.
Gallery with photos by Alex Sievers covering Signal Hill, Esperanza Trail, Valley View and petrogly...