What is Tonto National Monument?
Two stone-and-mud villages sit in shallow caves on the hillside above SR 188, looking north across Roosevelt Lake to the Sierra Ancha. They were built and lived in between roughly 1300 and 1450 CE by the people archaeologists call the Salado, a Tonto Basin culture that blended local traditions with those of migrants from the north, and whose descendants are among the O’odham and Pueblo peoples of Arizona and New Mexico today. The Lower Cliff Dwelling is the one everyone sees: about twenty rooms in a south-facing alcove, a 1-mile round trip up a steep paved trail from the visitor center. The Upper Cliff Dwelling is larger, more intact, with two-story rooms and original roof beams, and it is reachable only on a ranger-led tour.
The monument dates to 1907, which makes it older than the lake below it. Roosevelt Dam went up in 1911 and drowned the farmland the cliff dwellers’ ancestors had irrigated. The visitor center, a 1965 Mission 66 building, has a small, well-done museum of Salado pottery and textiles, water, flush restrooms and a shaded picnic area, and that is the entire developed footprint on 1,120 acres of saguaro hillside.
What you get is an hour of genuine 700-year-old architecture that you can walk into, a good museum and a view that explains the whole Tonto Basin. What you do not get is a long hike, shade on the trail, a cafe, or any access to the Upper dwelling without a phone call made months ahead. It is a half-day stop that earns its place as part of a Roosevelt Lake weekend rather than a destination of its own.
How to visit Tonto National Monument right
Pay at the door, or bring the pass. $10 per person 16 and up, cashless, or an America the Beautiful, Senior or Access pass. Kids are free. There is no reservation for the Lower Cliff Dwelling or the visitor center.
Book the Upper dwelling in October. Saturdays and Sundays, November through April, one tour a day, check-in by 9:45 a.m., 3 miles round trip with 600 feet of gain over three to four hours, six people per reservation, by phone only at (928) 467-2241. Reservations open October 1 and the good dates go in weeks. It is the better dwelling by a wide margin, so if you can plan a winter weekend around it, do.
Get there. Take Shea Boulevard to SR 87 and go north about 60 miles on the Beeline to SR 188, then turn right and follow SR 188 southeast for 39 miles, past Roosevelt Dam and the SR 88 junction, to the signed entrance on the right. Figure about two hours and five minutes from Old Town. From the East Valley, US 60 to Globe and 25 miles northwest on SR 188 is about the same. The Apache Trail shortcut no longer exists: SR 88 has been closed between Fish Creek Hill and Apache Lake since 2019, so do not let a map route you that way. The lot is small and paved; arrive at opening on a winter weekend, because by eleven it is full and the trail is a line.
Mind the hours. The visitor center opens at 8 a.m. every day and closes at 4. From October 4 to May 3 you can start up the Lower Cliff Dwelling trail until 3 p.m.; from May 4 to October 3 the last start is noon, and the park closes the trail outright for excessive heat, lightning, bees or flooding. Closed Thanksgiving, Christmas and New Year’s Day.
Climb it early. The Lower trail is a mile round trip, paved, with benches, and steeper than it looks; it faces the sun and the dwelling is in shade before ten. Carry water even for an hour. In spring, bees nest near the trail and the park will shut it when they are active; if you are allergic, bring your medication.
Dogs. Leashed dogs may hike the Lower trail and use the picnic area, but not enter the dwelling or the visitor center. Check in without the dog first.
Eat here. The picnic area has shade, tables and water; it is a better lunch than anything on SR 188 for twenty miles.
Skip it if you want a long walk or a cool day in summer. For Salado and Hohokam ruins closer to Scottsdale, Sears-Kay Ruin above Cave Creek is a free hilltop village 45 minutes from Old Town, and Montezuma Castle is the bigger cliff dwelling with the flatter trail. Otherwise make this part of a Roosevelt Lake night at Windy Hill or Cholla and it earns the trip.
The monument that came before the lake
The Tonto Basin was farmed long before anyone thought to protect it. From about 1150 the people archaeologists call the Salado, after the Rio Salado, irrigated the floor of the basin along the Salt River, built platform-mound villages, and made the red, black and white polychrome pottery that turns up in trade across the Southwest. Around 1330 the climate dried and the water table dropped; in the 1300s some of them moved up into the hills and built in the caves, including the two dwellings here, in south-facing alcoves with a spring and a long view of anyone approaching. By the mid-1400s the villages were empty. Where the people went is argued; the O’odham and the Pueblo nations both count them as ancestors.
Cowboys, settlers and the cavalry knew the ruins through the 1870s, and in May 1883 Adolph Bandelier, the first archaeologist to visit, sketched their floor plans. Then came the dam. The Reclamation Act of 1902 made a federal dam on the Salt possible, plans for Roosevelt Dam were set in 1903, and the Antiquities Act of 1906 gave the president power to protect the ruins the reservoir would make famous. On December 19, 1907, Theodore Roosevelt signed Proclamation 787 setting aside 480 acres around the two cliff dwellings as Tonto National Monument, under the Forest Service. Roosevelt Dam was finished in 1911, and the lake rose over the Salado fields and mound villages on the basin floor. The cliff dwellings, up on the hill, became the culture’s most visible survivors by accident of elevation.
The early decades were rough on them. The Forest Service had no staff for the place and handed its care to the Southern Pacific Railroad, which promoted the Apache Trail as a tourist route. The railroad built a road to the mouth of Cholla Canyon in 1929, a pit toilet and a one-mile trail, and hired Ray Stevens as caretaker at $30 a month; in 1932 it added a parking lot and a stone caretaker’s house that would serve as headquarters, visitor center and museum for the next thirty years. Visitors with pocketknives and shovels did more damage to the dwellings in the 1920s and early 1930s than the previous six centuries had.
The National Park Service took over in July 1933, and in 1934 sent Charlie Steen as the first ranger. Gila Pueblo took timber samples for tree-ring dating that year, a trail was cut to the dwellings, and in September 1935 Steen counted 305 visitors, the monument’s first attendance figure. In 1937 Franklin Roosevelt added 480 acres, bringing the monument to 1,120, and William Duffen, a University of Arizona graduate student, excavated and stabilized the Lower Cliff Dwelling for the first time. Steen came back in 1940 to stabilize the Upper dwelling, and his report on the excavations was finally published in 1960.
Postwar Arizona brought the crowds. Visitation hit 17,700 in 1950, when the first ranger house went up and the lot was expanded again, and 46,000 by 1960. Under Mission 66, the Park Service’s ten-year building program, the visitor center, museum and office were built in 1964 and dedicated in 1965; the entrance road and the Lower Cliff Dwelling trail were paved in 1974. The first systematic archaeological survey of the whole monument did not happen until 1985. In 1998 Tonto was among the first parks funded under the Vanishing Treasures program for crumbling Southwestern ruins, and the stabilization work has not stopped since. The monument marked its centennial on December 19, 2007, with about 56,000 visitors that year, roughly what it draws now.
Why it matters
Tonto National Monument is the only place in the Salt River system where you can stand inside the civilization the dams displaced. Everything downstream, from Roosevelt Lake to the canals under Scottsdale, is built on the water and the floodplain the Salado and the Hohokam farmed first, and the lake that made the Valley possible is the same lake that drowned their villages. That the ruins were protected four years before the water rose is a small accident of timing that paid off. For a Scottsdale visitor the verdict is practical: two hours each way for an hour’s climb is a lot, so attach it to a Roosevelt Lake night, book the Upper dwelling tour the first week of October, and go up the Lower trail at eight in the morning while the cave is still in shade.