Saint-Martin-l'Ars (French pronunciation: [sɛ̃ maʁtɛ̃ laʁ]) is a commune in the Vienne department and Nouvelle-Aquitaine region of western France.

They were created by humans, especially to meet the water needs of people (community ponds), livestock or after extraction (clay, marl, millstones).

Rich in botanical life they play a major role for amphibians (newts, frogs), reptiles (snakes) and dragonflies.

[7] The Abbey of Notre-Dame de la Réau, located on the left bank of the Clain in a secluded corner on the borders of Poitou and the Lower Marche, was founded in the 12th century by canons following the rule of St.

[10] Having reviewed the history and archaeological survey in 1937, François Eygun wrote in the Poitevin Press in 1970 that this was "one of the most prestigious monuments of the Haut-Poitou".