WELLINGTON, New Zealand (AP) - A New Zealand man and his son are feared dead following an avalanche on the world's second-highest mountain, K2. Fifty-three-year-old Marty Schmidt and his 25-year-old son Denali were last heard from Friday. Marty Schmidt had been posting about the pair's climb on the website for Macpac, which sells outdoor equipment. Last week he wrote they hoped to become the first father-and-son team to reach the summit of K2, on the Pakistan-China border. But Macpac on Monday posted a message saying reports indicated the pair had been killed in an avalanche. The Climber website quoted British climber Adrian Hayes as saying Schmidt last radioed on Friday and that Hayes' fears for the pair were confirmed when Nepalese Sherpas discovered their camp had been wiped out, probably as they slept.