Think I dug up a spring yesterday !
I dug a soakaway for kitchen and bathroom waste water- turf off, topsoil- clay then sand and water. I guess I just hit the water table.
I filled the bottom of the hole with stones that the pigs had dug up. Unfortunately that meant going into their paddock area with a bucket. Bucket = food so I had their noses in the bucket until I distracted them with wallnuts. Several buckets of stones cost nearly a sack of walnuts.