Covering and Protecting Pond Liners

Do you need underlayment to protect your liner? How do you cover a pond liner so that it looks natural? Can animals walk on the liner? We discuss all of your concerns in this video.
How to stop fill from sliding: 1:59
Anchoring fill on a steep slope: 2:59
Pond Underlayment:
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Pond Liners:
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[@heartlandgardenspondsupply917]

How are you wrapping the fabric around underlayment to secure it . What size pipe ? Looks like 4 inch

[@csabanemeth]

Really clear video about liners and edge/shore building.