"steep volcano" is a correct and usable phrase in written English
It can be used to refer to a type of volcano with a very steep sides or slope. For example, "The hikers had to be extremely careful when scaling the steep volcano."
Heavy rainfall or earthquake-induced avalanches of ice or hydrothermal clay also can cause mudflows on steep volcanoes during periods of repose between eruptions.
The desert floor is rich in minerals including bright yellow sulphur lakes and surrounded by steep volcanoes, many still active and emitting clouds of sulphurous gases.
This is particularly problematic on steep volcanoes with frequent explosive eruptions or rockfalls, on volcanoes with ice caps and in regions of dense vegetation (e.g., Pinel et al., 2011; Ebmeier et al., 2013; Lu & Dzurisin).
Early accounts described the unusual flat-topped steep-sided volcanoes (called tuyas) in Iceland that were suggested to have formed from eruptions below ice.
Tungurahua, Ecuador 16,479 5,023 1640 Lava and mixtures of hot ash and gas frequently flow down the sides of this steep and active volcano.
Extremely steep, cone-shaped volcanoes can partially collapse and create devastating debris avalanches.
The approximately 25 km wide island of Fogo is formed almost entirely from a single large and steep-sided shield volcano (Fig. 1).
These subglacial eruptions formed steep, flat-topped volcanoes and subglacial lava domes, most of which have been entirely exposed by deglaciation.
The summit of the volcano has steep slopes inclining from 20 to 30 degrees.
Built on a steep side of Pichincha Volcano, overlooking Quito, it's owned by ice-climbing guide Oswald Freire, who hosts his groups there before and after a planned ascent of Chimborazo, Cotopaxi or Cayambe.
