where concentrations will reach poisonous levels. Travellers must
stay away
from the edges of Skaftárjökull, Tungnaárjökull and Síðujökull while the jökulhlaup occurs.
Crevasses will develop rapidly around the ice cauldron, so travellers on Vatnajökull should
stay away
from the region, including the lower part of Skaftárjökull and Tungnárjökull, where floodwater could burst through the surface
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