[4] The Petites Montagnes Tortue is a small mountain range rich in quartz and quartzites.

[3] The forests are a refuge for flora and fauna dating from the Pleistocene, and are characterised by a large biodiversity and endemism.

[4] The geomorphology with steep slopes result in rare habitats which are home to localised species.

[3] About 20 species have been identified which are rare or endemic,[4] and include astrocaryum minus, eschweilera squamata, heliconia dasyantha, and octomeria sarthouae.

[3] On 30 September 2016, Petites Montagnes Tortue Biological Reserve was protected as a wilderness area.