Tersanas Cave is one of the interesting natural formations of northwestern Crete, offering a unique glimpse of the region's wild terrain.

Geographically, it is located on the Gramvousa Peninsula, in the Chania Prefecture, situated on the eastern side of the peninsula, overlooking the Gulf of Kissamos. The cave is carved into the steep cliffs, forming part of a landscape characterized by rugged beauty and pristine nature, and is situated a short distance from the famous Balos lagoon, located southeast of the main Balos Viewpoint. Due to its position on the eastern coastline of the peninsula, it offers panoramic views toward the waters of the Gulf of Kissamos, while a visit to the spot highlights the geological diversity of the island's northwestern tip.

Access to the cave is primarily through the trail leading to the Balos lagoon. Visitors who leave their vehicle at the end of the dirt road and begin the hike toward the beach can locate the cave on the slope of the peninsula. The route requires caution as the terrain is rocky and steep, typical of the dry and wild Cretan landscape.

Upon reaching the spot, the visitor will encounter an impressive opening in the rock that looks like a natural window to the sea. Inside the cave, the temperature is significantly lower, offering a breath of cool air from the summer sun. The view from the interior is unique, as the rocky frame surrounds the deep blue waters of the Gulf of Kissamos, making it an ideal spot for observation and photography. Inside, geological formations are visible, witnessing the long-term erosion of the limestone by the natural elements.