I have no pictures of this Area,but I remember jogging along this shoreline in the 80's, It was then I believe that they started work to concrete the section you refer to.
There were small wooden tree stumps and a fence in the sand which could be seen sometimes when the tide was out, it was here I read that a certain reverend from the early 19th century found old artifacts and paid local children money to collect any items found here, some of which are now in a Liverpool museum.
This has been mentioned here before I think it was this link,https://www.wikiwirral.co.uk/forums/ubbthreads.php/topics/194865/petrified_forest_near_Meols.html
I went over the area between the old Meols public baths and the dogs leg where the coastline changed towards Moreton with a metal detector in the late 80's but all i found was an old firemans coat button dated 1910.
hope this helps.
Ahh i see Transcentral beat me to it ...lol