The volcanic group is formed by several steep, small volcanic cones and lava domes that emerge from the ice of Evans Neve over a long area. Most are nameless with the exception of the central Taygete Cone, Alcyone Cone just south of Taygete and the pair of c. high Mount Pleiones and c. high Mount Atlas in the southern sector. Mount Atlas and Mount Pleiones form a compound stratovolcano which is the principal volcano of The Pleiades. Mount Atlas is formed by three separate cones that rise above the ice. Dykes, lava and scoria flows are found on these cones, the youngest of which has a semicircular crater. and scoria cones dot its flanks. At the foot of Mount Atlas are moraines with the form of ridges. The cones northeast of Mount Pleiones may outline a caldera and its summit features nested craters.