Vatnajökull, Europe's largest glacier, offers a variety of experiences from ice caves and glacier hiking to exploring glacial lagoons. Accessibility can be challenging, especially in winter, and some areas require 4x4 vehicles. While exploring the glacier's edge and the surrounding national park independently is possible, guided tours are highly recommended for ice caves and glacier hikes due to safety concerns and specialized equipment. Ice caves are typically only accessible during winter months (November to March). The cost varies depending on the activity, ranging from free for visiting viewpoints to upwards of $150 for guided tours. A typical visit duration ranges from a few hours to several days, depending on the chosen activities. Be sure to check weather conditions and tour availability in advance.