If I had the money, I would go down there just to catch a glimpse of the crystals for a split second. But given how dangerous it is, I seriously doubt they will be allowed to give tours to the general public. No insurance company is going to take the risk of tourists getting hurt and/or sick in these caves. The only thing that could allow that is if each tourist signs a waiver stating they know the risks of going to the hostile environment and that the tourism company/mine owner is not responsible for injuries/illness.