Hierve el Agua Travel Guide

About Hierve el Agua

Hierve el Agua ("the water boils") is one of Mexico's most unusual natural sites, located about 70 kilometers east of Oaxaca City in the Sierra Madre mountains. Despite the name, the water is not actually hot -- it is cool, mineral-rich spring water that bubbles up from the rock, giving the appearance of boiling. Over thousands of years, the mineral deposits have created petrified "waterfalls" -- cliff faces encrusted with white and gold minerals that look like frozen cascades of water.

What to See

The Petrified Waterfalls

Two main petrified formations exist at the site:

• Cascada Grande -- The larger formation, about 30 meters high, visible from the natural pools above. A trail leads down to the base for a different perspective.
• Cascada Chica -- A smaller formation accessible via a walking trail from the main area

Natural Infinity Pools

At the top of the cliff, shallow mineral pools collect spring water and sit at the very edge of the precipice, creating natural infinity pools with sweeping views across the Oaxaca Valley. Swimming in these pools is permitted and is the highlight for most visitors. The water is cool and refreshing, with a slight mineral taste.

Visiting Tips

• Bring swimwear -- The pools are shallow (usually knee to waist deep) but perfect for wading and soaking
• Wear sturdy shoes -- The hiking trail to the lower waterfall views is rocky and can be slippery
• Bring water and snacks -- There are some food stalls at the entrance, but options are limited
• Arrive early or late -- Midday can be hot and crowded, especially on weekends. Morning visits offer better light for photography.
• Allow 2-3 hours -- Including time to swim, hike to the viewpoints, and take in the scenery
• Sun protection -- There is minimal shade at the pools themselves

Cost

Admission is approximately 50-100 MXN. Parking is additional if driving.

Getting There

Hierve el Agua is in a remote location and requires some planning:

• Organized tour -- The easiest option. Many operators in Oaxaca City offer day tours combining Hierve el Agua with mezcal distilleries, the Tule tree (one of the world's largest trees by trunk circumference), and the Mitla archaeological site. Tours typically cost 300-500 MXN per person.
• Colectivo -- Take a colectivo from Oaxaca to Mitla, then a shared truck or taxi up the mountain to Hierve el Agua (the last stretch is on a winding mountain road)
• Rental car -- Drive via Highway 190 to Mitla, then follow signs uphill. The final 14 km is on a paved but narrow mountain road. Allow about 1.5-2 hours from Oaxaca City.

Community Management

Hierve el Agua is managed by the local community of San Lorenzo Albarradas. Access has occasionally been disrupted by disputes between neighboring communities. Check locally before making the trip to confirm the site is open.

Best Time to Visit

The dry season (October to May) offers the best conditions. During the rainy season, the trails can be muddy but the surrounding landscape is greener. Morning visits generally have the best light and fewer crowds.

Plan Your Visit

Hierve el Agua is a highlight of the Oaxaca Deep Dive 5-Day itinerary. Most visitors combine it with a mezcal tour and visits to Mitla and the Tule tree for a full day exploring the Oaxaca Valley.