 The completely-separated small neighboring lakes include the Frillensee in the south (not to be confused with the larger Frillensee near Inzell), and Braxensee, Steingringpriel, Steinsee, Froschsee, and Drachenseelein in the north.Due to its location below the Zugspitze and the clear, green-tinted water, the lake is considered one of the most beautiful lakes in the Bavarian Alps.It was formed when the Isar Loisach glacier withdrew at the end of the Würm glaciation and left a depression that filled with water.