History Of Langebaan The Langebaan Lagoon was formed by the rising and falling of sea levels during pre-historic times. This is unlike most lagoons which form where fresh water rivers enter the sea (like Milnerton lagoon). As a result, Langebaan Lagoon is a purely salt water lagoon.As far back as 500 000 years ago, early Homo sapiens were probably present in the area, living in groups and hunting small game,...... Similar Editorial : by Mithun Bhattacharya. | Source : American Passports