The peat layer is only a few tens of centimetres high.

The peat layer is up to almost 6 metres thick in places.

Established strand swamps with a large amount of vegetation have deep peat layers.

These deep peat layers can serve as a wick to draw water from underground into the swamp during droughts.

On western moors the peat layer may be several metres thick.

The agricultural land use will never restore the carbon permanently in the ecosystem equal to the original peat layers.

The dry conditions encourage the mineralisation of the peat layers and enable woods to develop.

About 15 million years ago, these plants died out and formed a peat layer up to 270 meters thick.

He said that if the original pilings "had gone through the peat layer, I don't think we would have had a problem."

Also the abbey did not permit the excavation of the peat layer on its lands.