A globally rare and fragile karst landscape

Our Plaister Cliffs conservation lands lie along the Bras d’Or in Cape Breton.


This area is well known for the “plaister,” or gypsum, that forms the basis for a globally rare, fragile, and fascinating karst landscape. Karst landscapes are formed from the dissolution of soluble rocks and are characterized by underground drainage systems that form otherworldly above- and underground terrains of sinkholes, caves, and escarpments.

Karst features are considered threatened in Nova Scotia, very rare in northeastern North America, and globally uncommon. In Nova Scotia, approximately 90% of the karst sites are located on private land, which makes the Nature Trust’s private land conservation work a critical tool to protecting these unique habitats.

Learn more about our work in Plaister Cliffs


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