Malham Tarn (Scan from 1989)

A place for lunch on a pleasant October day in 1989.

Malham Tarn is a glacial lake near the village of Malham in the Yorkshire Dales, England. The lake is one of only eight upland alkaline lakes in Europe. At an altitude of 377 metres (1,237 ft) above sea level it is the highest marl lake in the United Kingdom.”
en.wikipedia.org/wiki/Malham_Tarn