📜 Nestled in the Cuatrociénegas Reserve, these majestic, white dunes are formed by desert winds. 🔍 The second-largest gypsum dunes in North America, dating back to the Cretaceous Era seabed. # Why Go 🚶 Walk through dunes, journey back in time to a Cretaceous seabed. ☀️ Pure gypsum sand shines brilliantly, making for glorious sunsets. 📸 Great for nature photography of unique landscapes and vegetation. 🏜️ Experience North America's second-largest gypsum dunes. # Tips 👟 Visitors can take their shoes off in the dunes. 🗺️ Consult a guide from the Poza Azul Visitors Center for insights. 🅿️ Ample car parking space is available at the site. # Cost 💰 Admission is affordable, tickets available at Poza Azul Visitors Center. # Hours 🕒 Daily, 10 a.m. to 6 p.m.