"Les Coux" is the name for this volcano used on the maps, its real name is in fact "the Leckous volcano". We also know this volcano under its celtic name "Lech'ous". It is flat, in shape of a crescent moon.
A Peléan eruption is extrusive meaning it is caused by viscous, gas-poor magma which builds domes. Depending on the lava's viscosity, the domes can take on different shapes.