eroded rocky sills on the northumberland coast near scremerston, south of berwick-upon-tweed - part of the alston formation

alston beach beautiful berwick berwicktweed blue coast coastal coastline cocklawburn countryside dykes east england english eroded europe formation geological geology layers ledges limestone mudstone natural nature north northern northumberland northumbria ocean outcrop outdoors part path rocky rural sandstone scenic scremerston sea seascape sedimentary shoreline sills siltstone sky south straight strata summer sunny sunshine tourism tweed view