The Col Saint-Antoine is located in the Monte San Petrone massif, a chain of medium-sized schist mountains in the northeast of the island, north of the Castagniccia region.

It is located west of the municipality of Casabianca, about 8 kilometres (5.0 mi) north-northeast of Monte San Petrone.

The strong westerly winds which prevail further north on the Cap Corse range are hardly felt.

The pass was frequented ten years ago in October by hunters of migrating wood pigeons.

The site is located in the heart of “petite Castagniccia”, an area covered with arborescent vegetation dominated by chestnut trees, most often in the form of orchards or coppices, with holm oaks.