The shift in the landscape is striking between the barren craggy moors north on Askøy and the green fields of Herdla, which has the county's biggest farm. The majority of Herdla, such as the island appears today, is a gift from the glacier: The glacier that advanced here over 12,000 years ago stopped at the northern tip of Askøy and took its time building up the moraine on Herdla. Since then, Herdla has been under continual transformation. The re-organisation of the loose sediment deposits continues today.
Spring, summer and autumn, there is bird life on Valen, and the tidal zone is especially attractive. Out on Herdlaflaket, you see ducks and other diving birds all year round, but most in winter.
Bergen folk landed on it, long and well. The Germans took it over, during the Second World War. The birds had been doing it for several thousands of years: HERDLA is the main airport for migrating birds during their autumn migrations.