THE CAVE OF Mara, in the Kokkinogeion. Discovered in September 1978 by a group of Greek and French speleologists, who starting from certain natural phenomena, argued that the water sources of the river Aggitis must pass through the cave. To prove attempted to dive SUITS sources. 7 meters in depth passage found in the cave. Revealed a huge arcade length of 500 m. The roof is full of stalactites, some have a diameter of 2 m and reach the water surface. The amazing colors, which are due to the existence of minerals (manganese, iron, copper, etc.).