A is a hole where the steam looks a lot like a smoke. Geyser
Volcano
Hot spring Fumerole
Tectonic​

Hot spring Fumaroles

Explanation:Fumaroles and Geysers are vents/holes/openings usually occuring after volcanic activities.

While Geysers is steam from gathered surface water erupting the earth surface,

Fumaroles are a combination of steam and gases(Hydrogen sulphide, carbon dioxide, or hydrogen chloride) which erupts from the earth due to the heating up of the molten magma left after a volcano.

The name fumarole was coined from the Latin word "fumus" which means "smoke" and was given because of its appearance in the atmosphere.

answer; no longer than a reasonable period of time;

answer; ///self- learning;