by Kazu
There has been no unfortunate accident brought by the dense sulfur gas in that area of Noboribetsu City but some happened in the other part on this globe, I heard. All th citizens in a village of Africa passe because of the sulfur gas erupted from the volcano near by in the evening.
I am not sure whether there gadget to measure the density of sulfur in the air or not but I sometimes concerned about it after the accident in Africa.
Yellow Stone National Park in the United States of America was dangerousthe ground collapsed here and the hole swallowed the automobiles that were used by the tourists to reach there
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