In olden times, the fields were (nearly) all accessible by sunken lanes.
This extract from the 1827 land register shows the layout of the old fields in strips and nearly all accessible by a sunken lane. We are here at the crossroads of two sunken lanes which previously went down to the ‘Village de la Mare’.
The hedges and lanes of Regnéville-sur-Mer – a haven of biodiversity
The sunken lanes and the hedges contribute on a local level to the regulation of the climate by reducing the force of the wind and providing coolness in summer. Thanks to the tree roots, the hedge also filters and improves the quality of the water, limits landslides and flooding. The plants store carbon in great quantities. One kilometre of hedge absorbs 1 ton of CO2 per year.