📜 Gruta Casa de Pedra is a cave in Brazil's Parque Estadual Turístico do Alto Ribeira (PETAR), known for its 172-meter high entrance. 🔍 It is 2,930 meters long and located between Apiaí and Iporanga, São Paulo. # Why Go 🏞️ Witness the world's second-highest cave portal 🌿 Explore a biodiverse world heritage site with impressive geological formations, rivers, waterfalls, and natural pools 📸 Great for nature lovers, photographers, and spelunkers 🚶 Hike trails through lush Atlantic rainforest # Why Avoid 🚫 Main cave behind portal closed to public 🗺️ Remote location, requires driving on dirt roads 🗣️ Some trails require a local guide # Tips 👟 Wear good walking shoes 🔦 Bring a torch for exploration 🗓️ Consider staying 3-4 days in the park # Cost 💰 Free entrance to the cave portal. # Hours 🕒 Open daily, no restrictions. # 🅿️ Parking Free roadside parking located at Casa de Pedra núcleo, 16 km from Iporanga on a dirt road.