A massive rockfall injured two people along Cape Kidnappers beach in Hawke's Bay on Wednesday afternoon. A woman in her 20s is in a critical but stable condition in the ICU unit of the Hawkes bay Hospital hospital. And a man in his 20s is stable after they were swept out to sea by the avalanche. A video was captured by Denis Birnie, from Christchurch, who was one of 68 people on a tractor tour of the gannet colony at Cape Kidnappers when the rockfall happened. He told our reporter Anusha Bradley what he saw.