The Makay Massif is situated in the district of
Beroroha in the south and
Malaimbandy in its north, in the south-east of Madagascar. It covers an area of approximately 4000 km2. It extends north-northeast–south-southwest for approximately 150 km, and is up to 50 km wide. The massif reaches up to 1000 meters elevation. It is deeply dissected by sinuous canyons. It forms part of the boundary between
Atsimo-Andrefana Region on the south and east and
Menabe Region on the west and north. Several rivers have their springs in the massif. The
Sakeny River rises from the northeastern massif and flows northward to join the
Tsiribihina River. Tributaries of the
Mangoky River, including the Makay River, drain the southeastern and southern slopes of the massif. The
Morondava and
Maharivo rise from the western slope, and empty westwards into the
Mozambique Channel. The massif's bedrock is principally
Isalo II mudstones and sandstones, also known as the Makay Formation. The formation include fossils of
Triassic period. ==Flora and fauna==