Yes, many large basins contain smooth plains that are likely to be filled with lava.
No. Deimos is not a planet; it is a small moon. It does not have any volcanoes or geysers.
No, geysers send up fountain like jets of water and steam. Volcanoes erupt lava.
What I have learned in Earth Science I would say that there is many volcanoes and/or ice geysers.
no, it does not
Iceland.
volcanoes & geysers
geothermal
Yes, Mercury has extinct volcanoes.
Mercury has impact craters but not volcanoes.
geothermal
The North Island.
NASA believes Pluto may have an ice volcano.