Watch glaciated peaks rise above a crystal-blue reservoir, sip a Chilean breakfast beside the water, then soak in volcanic-heated pools—all within a day trip from Santiago. Practical notes on timing, altitude, and what to pack keep this scenic morning grounded.
More ways to explore the area's outdoor wonders
You arrive before the valley fully wakes; the road climbs out of Santiago and the river dares you to keep your eyes on the passing peaks. At Embalse El Yeso, a broad bowl of blue sits beneath glaciated ridgelines—wind pushes across the reservoir and the mountains hold a crisp, mineral silence. Breakfast here tastes of strong Chilean coffee and warm bread, a low-key ritual against a high-altitude panorama.
Difficulty
easy
Duration
10 hours
Fitness Level
Suitable for travelers in average physical condition; mostly short walks and time spent at viewpoints and pools.
Wildlife
History
The Maipo valley has long connected Santiago with Andean passes; in the 20th century the reservoir was developed to regulate water supplies and support regional needs.
Conservation
High-Andean ecosystems are fragile—stay on designated areas, pack out trash, and avoid introducing soaps or lotions into thermal waters.
Reserve your spot on the Embalse el Yeso and colina thermas with breakfast today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Acclimatize before you go
Spend a day in Santiago or San José de Maipo to reduce mild altitude symptoms before the tour; hydrate the night before.
Layer for rapidly changing conditions
Temperatures swing between sunny mornings and windy mid-day at 2,500–2,800 m; pack a warm mid-layer and windproof shell.
Protect against the sun
High-altitude UV is strong—use broad-spectrum sunscreen, a brimmed hat, and UV sunglasses during reservoir viewpoints.
Bring cash for extras
Lunch and snacks may be pay-as-you-go at local stops like the chocolate house; small vendors often prefer cash.
Sturdy walking shoes
Support and traction for rocky viewpoints and short shoreline walks.
Insulated mid-layer or fleece
Keeps you warm during cool mornings and windy moments near the reservoir.
fall
Sun protection (sunscreen & sunglasses)
High-altitude sun exposure is intense around the reservoir and on open slopes.
summer
Reusable water bottle
Hydration is important at altitude—refill before you start the tour.
spring