Analysis of information sources in references of the Wikipedia article "The Himalayan Database" in English language version.
But his claim to have now climbed all 8000ers is open to question. In April 1990 he and others reached the summit plateau of Cho Oyu. It was misty so they could not see well; nine years later Hinkes said he had "wandered around for a while" in the summit area but could see very little and eventually descended to join the others, one of whom said they had not reached the top.
But a South Korean climber, who followed in their footprints on the crusted snow three days later [in 1997] in clearer weather, did not consider that they actually gained the top. While [Sergio] Martini and [Fausto] De Stefani indicated they were perhaps only a few meters below it, Park Young-Seok claimed that their footprints stopped well before the top, perhaps 30 meters below a small fore-summit and 150 vertical meters below the highest summit. Now in 2000 [Sergio] Martini was back again, and this time he definitely summited Lhotse.
