Mammoth Slip and Slide Water Slide nestled above the spectacular fishing lake at Greendale Farm Shop! 410ft long water slide! They provide inflatable rings and body boards for your enjoyment. These allow you to launch yourself off our mammoth-sized water slide ramp, starting an exhilarating journey down our sprawling 410ft long water slide! Enjoy a full hour of slip and slide fun with your kids. Families love it so much, they keep coming back!