inspicio: The change in guidelines in April specifically prohibit this type of container in the position it is so this cache has to be archived now that I am aware of it. (Caches cannot be buried or partially buried.)
I would also be worried about the apparent damage being done to the wall by searchers who haven't read the listing or referred to the hint. Remember a traditional cache is supposed to be able to be done without having to read the listing so warnings on the listing do not always get read to stop this.