Spring on the beach at Allonby

Freshwater was bubbling up through the sand and shingle on the beach south of Allonby. It the flowed straight down to what looks like a wrecked pipeline. I had wondered if it might be an artesian well (see illustration on https://www.yourdictionary.com/artesian-well) but maybe there is an old drainage pipe submerged beneath the shingle whose outer end has broken.