Mike's Travel Adventures

Explore Sao Miguel's Underground Lava Tubes. Gruta do Carvao is one of Sao Miguel's most fascinating geological wonders, offering visitors the chance to explore a volcanic lava tube formed over 12,000 years ago. Located near Ponta Delgada, this lava cave stretches for over 1,650 meters, making it the longest lava tunnel on the island. Inside, you'll discover otherworldly rock formations, lava stalactites, and unique mineral deposits that showcase the island's volcanic past. The cave's interior is filled with smooth basalt walls, solidified lava flows, and colorful mineral streaks, creating an eerie yet mesmerizing underground landscape. A guided tour through Gruta do Carvao provides insight into the island's volcanic history, explaining how these tunnels were formed by flowing lava thousands of years ago. It's a must-visit for nature lovers, adventure seekers, and anyone curious about the powerful forces that shaped the Azores. What to Expect at Gruta do Carvao: Explore an Ancient Lava Tubes: Walk through the dark, twisting tunnels where molten lava once flowed. See Unique Rock Formations: Discover lava stalactites, flow layers, and mineral deposits in shades of red, yellow, and black. Learn About Volcanic Activity: Guided tours provide scientific and historical insights into the island's volcanic past. Experience the Cave's Silence: Step into an underground world where sound is absorbed, creating a surreal atmosphere.