Hierve el Agua is a pair of white mineral formations on a cliff edge in the mountains east of Oaxaca City, and the name misleads twice: the water does not boil, and there is no waterfall. Over thousands of years, mineral-rich spring water trickled over the rim and left thick calcium deposits behind, building two stone curtains that look like a waterfall frozen mid-drop.

From the top you see natural and man-made pools of turquoise water spilling toward a valley of dry mountains, and swimming in them is the reward for a 1.5 to 2 hour trip each way. Access has been affected by local closures in the past, so confirm the site is open before you set out. The road east is packed with worthwhile stops, and this guide shows how to pair the pools with Mitla and a mezcal distillery.

What is Hierve el Agua

There are two mineral formations at the site. The larger one, often called the cascada grande, drops around 50 meters and is the classic image you have probably seen. The smaller cascada chica sits near the parking and pool area. Both were formed the same way: underground water saturated with calcium carbonate and other minerals bubbles up through the rock, spills over the cliff edge, and slowly petrifies into rippled stone as the water evaporates. The result looks like a waterfall that turned to rock mid-flow.

At the top, near the edge, are the pools. Some are natural and fed by the springs; others are shallow constructed pools that hold the mineral water. This is where the famous infinity-pool photos come from, with the water appearing to drop straight into the valley beyond. The water is not hot spring water in the geothermal sense, so do not expect a steaming soak; it is cool to mild and refreshing under the Oaxaca sun.

How to get to Hierve el Agua from Oaxaca

You have three realistic ways to reach Hierve el Agua from Oaxaca City, and the right one depends on how much you want to manage yourself.

Organized tour

The easiest option is a Hierve el Agua tour. Most day tours from Oaxaca bundle the site with other stops on the same road east, commonly the Tule tree, a rug-weaving workshop in Teotitlan del Valle, the ruins at Mitla, and a mezcal distillery. A tour removes the transport puzzle, gets you there without a rental car, and usually includes a guide. The trade-off is a fixed schedule and less time to linger. If you want the simplest day, this is it, and our team can help arrange it.

Colectivo via Mitla

For independent travelers, the classic route is by colectivo. You take a shared colectivo or bus from Oaxaca City to the town of Mitla, then transfer to a shared pickup truck (camioneta) that runs the final mountain stretch up to Hierve el Agua. This is the most budget-friendly way and lets you set your own pace, but it takes longer, the last leg is a bumpy ride, and you should confirm return truck times so you are not stranded late in the day.

Drive yourself

Renting a car gives you the most freedom, especially for arriving early. The drive from Oaxaca City runs east on the highway toward Mitla, then onto a winding mountain road for the final ascent. The last section is unpaved and rough in places, so go slowly and drive it in daylight. Driving also makes it easy to combine Mitla and a mezcal stop on your own timing.

Best time to visit Hierve el Agua

The best time to visit Hierve el Agua is early in the morning. Tour groups tend to arrive from late morning onward, so getting there soon after opening means quieter pools, cooler air for the short walks, and better light for photos before the midday sun flattens everything. Early arrival also gives you the pools closer to yourself before the crowds build.

Seasonally, the drier months generally bring clearer skies and firmer trails, while the rainy season can make the final unpaved road muddy and the afternoons cloudy. Whenever you go, bring a swimsuit, water, sun protection, and shoes with grip for the mineral rock, which can be slick where water runs over it.

Swimming in the pools

Swimming is the main reason many people come. The pools at the top are shallow and calm, and floating there with the valley spread out below is the signature Hierve el Agua experience. Because the water is mineral-rich, it can leave a faint film, and levels vary with the season, so some pools may be fuller than others on a given day. Watch your footing near the edges, keep an eye on children, and respect any roped-off or closed sections. This is a natural site at altitude, not a resort pool, so caution matters.

Combine Mitla and a mezcal stop

Hierve el Agua sits at the end of a road packed with worthwhile stops, so it is easy and rewarding to combine. Mitla, famous for its intricate stone mosaic fretwork, is on the way and pairs naturally with the trip. The same route is the heart of Oaxaca mezcal country, and small palenques along the way offer tastings and a look at how the agave spirit is roasted, crushed, and distilled. Many travelers do Mitla in the morning, Hierve el Agua midday, and a mezcal tasting on the way back. If you have more time, the road eventually reaches the coast, where Puerto Escondido and Bahias de Huatulco make a natural next stop for travelers continuing south.

More of Oaxaca State

Before you go

Is Hierve el Agua always open?

No. Access has been affected by local closures in the past due to community disputes over management. Always confirm the site is currently open before you travel, especially if you are driving yourself or relying on colectivos.

How much does Hierve el Agua cost?

Small local access and parking fees are collected on arrival, and amounts can change, so check the current rates on the day rather than relying on an old figure. If you take a tour, entry logistics are usually handled for you.

Can you swim at Hierve el Agua?

Yes. The shallow spring-fed and constructed pools at the top are open for swimming when the site is operating. Bring a swimsuit, wear shoes with grip on the mineral rock, and take care near the cliff edges.

How long does a visit take?

Plan a half to full day from Oaxaca City. Travel is about 1.5 to 2 hours each way, and most people spend roughly 1.5 to 2 hours on site walking the formations and swimming.