Many tunnels have long remained outside the attention and gradually destroyed, so walk along them without a guide is not only very scary, but also life threatening. Meandering passages deprived of light are partially flooded with water, and you can see crumbling stones and ceilings everywhere. While walking through abandoned mine sites you have to be very quiet so as not to trigger landslides.
Tourists have free access to existing mine sites, so they can observe production and primary processing of the ore. Despite the huge scale, Kirunavara is one of the most comfortable mines in the world. Even people who are very sensitive to lack of oxygen can walk along its deserted corridors thanks to the modern air supply system. There are excellent conditions not only for work, but also for amazing tours.
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