A fumarole -LRB- Latin fumus , smoke -RRB- is an opening in LOCATION@1 's -LRB- or any other astronomical body 's -RRB- crust , often in the neighborhood of volcanoes , which emits steam and gases such as carbon dioxide , sulfur dioxide , hydrochloric acid , and hydrogen sulfide .

A fumarole -LRB- Latin fumus , smoke -RRB- is an opening in the crust of the LOCATION@1 , often in the neighborhood of volcanoes , where steam and gases come out , for instance carbon dioxide , sulfur dioxide , hydrochloric acid , and hydrogen sulfide .
