USA-Made Flat Mock Rock®Hide unsightly or dangerous problem areas in your yard or garden with our versatile, realistic Mock Rocks. Lightweight but very durable, Mock Rocks have a hollow design that makes an attractive and economical solution to pipes, meters, bare spots, stumps and other landscaping problems. Our Flat Mock Rock is the perfect solution for lids and other low lying covers up to 24"W x 3"H, including: Septic lids Water garden skimmer cover The realistic design