Gardai Esker - the largest and most imposing esker in Žemaitija (Samogitia). This is a unique in geomorphologic sense shape of land and one of the most picturesque in Lithuania. An esker is a long narrow hill composed mostly of sand and gravel. This ridge was formed from sediments that deposited inside glaciers, on the beds of melted ice water streams about 12 – 13 thousand years ago. This peculiar semicircle-shaped embankment-ridge stretches from the Varduva river in Žemaičių Kalvarija town for 3.5 km northwest. In some places, the height of the Gardai Esker reaches 10-15 metres from the feet to the highest crests of the ridge. In this place a gravel quarry used to be in Soviet times, and later it was exploited as an illegal dumpsite. geomorphologic sense shape of land and one of the most picturesque in Lithuania. An esker is a long narrow hill composed mostly of sand and gravel. This ridge was formed from sediments that deposited inside glaciers, on the beds of melted ice water streams about 12 – 13 thousand years ago. This peculiar semicircle-shaped embankment-ridge stretches from the Varduva river in Žemaičių Kalvarija town for 3.5 km northwest. In some places, the height of the Gardai Esker reaches 10-15 metres from the feet to the highest crests of the ridge. In this place a gravel quarry used to be in Soviet times, and later it was exploited as an illegal dumpsite.