San Carlos is in the northern state of Sonora, bordering Arizona. About a 6 hr drive from here in Tucson. It's a fishing village, mostly populated by retired Americans. We have been traveling to S.C. for about 15 years. Wonderful place with great people! Have made a few friends there over the years, and enjoy seeing them whenever we go. Always have a great time!! As you can see, it's not too bad on the eyes, either. GREAT fishing here, too!!!