Grjótagjá: Hidden Heat Beneath the Earth 🌋💎 Tucked inside a lava cave near Lake Mývatn lies Grjótagjá, a steamy underground hot spring that feels straight out of a fantasy novel — because it kinda is! (Game of Thrones fans, you might recognize it… 🐉❄️) This small fissure in the earth is home to crystal-clear, geothermally heated water that once served as a secret bathing spot. The temperature now runs a bit too hot for soaking, but stepping into the cave is still pure magic. 🕯️🔥 Dim light, echoing drips, rising steam, and glowing blue water — it’s a moody, mysterious stop that captures the wild beauty of Iceland’s volcanic heart. Just don’t forget to duck… the entrance is as humble as the vibe is epic. #grjótagjá #icelandtrip #lavacave #myvatn