[2] It covers 9.78 km2 area and reaches a depth of 50.2m which makes it the third deepest lake in Lithuania.

Such lakes are similar to rivers: they are long, narrow (the greatest width of Asveja is only 880 m.), and deep.

[4][5] In 2019, a major repair project was announced; the underwater poles were to be replaced with metal, and new wooden posts, guardrails, and handrails installed above the water.

[6] During the repairs, the skeleton of a 16th-century soldier, whose boots and weapons were remarkably well-preserved, was found in 9 m of water.

[5] According to archeologist Elena Pranckėnaitė, "For now, we assume that those discovered human remains could be linked with the former bridge leading to Dubingiai Castle, which was situated on the hilltop on the shore of Asveja Lake.