At the end of the ice age, melting glaciers raised sea levels and inundated what had been ancient shorelines.

The interpretations of some features as ancient shorelines has been challenged.

Along the margins of this region are physical features indicative of ancient shorelines.

Two ancient shorelines in the Toronto area mark the existence of former glacial lakes.

Another ancient shoreline exists between 2-4 km offshore of Toronto.

This is surely a major reason we have yet to stride the ancient shorelines of Mars.

A raised shoreline is an ancient shoreline exposed above current water level.

Dinosaurs roamed the ancient shorelines here both as individuals and in groups.

The ancient shoreline of the last glacial period is now under approximately 390 feet (120 meters) of water.

The ancient shoreline is evidenced by tufa formations throughout the area.