no, the brick goes down as far as I can probe and there is a brick lined well 30 feet "up stream". 60 years ago this stretch of beach was very different, it had a year round stream, (county diverted it)....protected sandy beach cove, (county hauled it off for road projects)...high bank grass land, (county...well you get the picture). I have found 20 or so old medicines directly in front of this feature along the tide line over the years, always wondered where they were coming from.