The island is 2 km wide and 3 km long.

The strait is deep and 5-16 km (3-10 miles) wide.

It is about 240 km wide at its narrowest point and generally around 50 metres deep.

The crater is 35 km wide and about 2 km deep.

By 2008 the lake was 7 km long, 2 km wide and 245m deep.

It is 28 km long, 16 km wide, and 10 m deep.

The lake is 5 km (3 mi) wide at its broadest point.

This man made lake is 45 km long & 15-18 km wide.

The island is no more than 5 km wide and 8 km long.

The gulf is 13 km long (north to south) and 2 to 3 km wide.