(madagascar)
Coordinates: -18.84819455364321, 46.222956390352884
Area: 160.0069094248047 km²
OSM tags:
geological: volcanic_caldera_rim
name:en: Ambohiby Massif
name:fr: Bassin Versant d'Ambohiby
note: This is not per definition a caldera. It has never erupted but is just the leftovers from a never erupted volcano.