📜 Archaeological site in Southwestern Colorado's San Juan Mountains. 🔍 Preserves 200 ancient buildings of Ancestral Puebloans, including a Great Kiva and Great House Pueblo. # Why Go 🚶 Explore ancient pathways and structures 🔭 Observe unique celestial events like lunar standstills (including major lunar standstills every 18.6 years) 🏞️ Enjoy 360-degree panoramic views of Colorado and New Mexico from 7,000 feet elevation ⭐ Participate in special programs like Full Moon and Night Sky viewings 📚 Learn about Chaco Culture connection and daily life # Why Avoid 🚫 Closed seasonally from October 16 to May 14 ⛰️ Programs involve hiking at high elevations with steep gradients and uneven terrain to Great House Trail # ℹ️ Tips 🗓️ Advance reservations recommended for special programs 💧 Bring water, flashlights, and a blanket/mat for programs 🧥 Dress warmly for evening events as nights cool rapidly ⏰ Check-in at the entrance gate promptly for programs # 💰 Cost Activity pass $20 vehicles, $10 motorcycles for 5 days; guided tours extra. # 🕒 Hours May 15 - October 15: Daily 9:00am - 4:30pm (Main Gate), archaeological sites close 3:15pm.