Hi all. We have a small patch of our garden which is relatively flat, and the rest is a bit of a hill. We cleared the flat part only to discover that there were uneven paving slabs underneath the shrubs /tree stumps etc. Any ideas how to make this uneven surface child friendly? We wanted to put a fence on the other side too but the concrete slabs meant this was not possible. We've been advised the bricks In the retaining wall were not secure enough.