Spurn Point has gradually shifted westwards over the centuries
A new report says that Spurn Point is not at risk of being washed away.
Research by the Environment Agency contradicts the established theory that the land would eventually be destroyed by coastal erosion.
The six-kilometres finger of sand juts out into the Humber Estuary from the Holderness coast.
At some points it is just a few metres wide.
As part of the fastest eroding coastline in Europe, many experts thought that the thin parts would be swept away in storms, leaving the point isolated as an island.
Eventually even the remaining land masses would be destroyed as the direction of offshore winds and the tide forced the coastline ever westwards.
The new report predicts a different future, as Phillip Wynn, strategies manger for the Environment Agency, explained:
"We expect it will change in shape and become over-washed more frequently, but we certainly don't believe that it's going to be completely eroded away."
The point is a vital barrier protecting the deep water channels along which shipping travels to the Humber ports.
Spurn Point was once an important military base during the two world wars. It was equipped with gun emplacements, barracks, and a hospital. The facilities were serviced by a narrow-gauge railway.
It is now a wildlife reserve and a nationally important haven for migrating birds.
The point is also home to the UK's only full-time lifeboat crew. The staff and their families live in a small cluster of houses at the bottom of the peninsular.