All caves are handmade by us in our Port Monmouth facility. Our caves are made with natural stoneware and food grade clay, fired to 2208-2291 degrees rendering them fully vitrified. Our caves will not leach chemicals into the water or break down with time. It is our goal to bring you the best quality breeding caves and hides available. All caves are sanded before firing to ensure there are no rough edges to damage your fish. We hope you enjoy our caves as much as we enjoy making them.