Areas of relict wetland. Where known the type of wetland is included e.g. salt marsh, tidal flat, peat bog, supra tidal zone, swamp, other.
Chronological information is presented as calendar age BP.
Confidence is defined as follows: 1. High: Sampled feature with good age and palaeoenvironmental control. 2. Sampled feature with poor or none age and palaeoenvironmental control. 3. Constructed by remote sensing data only. 4. Low: Reasonable without any direct evidence.