Possible to visit the main natural attractions of Yunnan without having to go higher than 3000m?

We'd like to spend some time in Yunnan as we're interested in hiking and also in exploring the local culture. But I'm worried that to get to see the main sights (eg Leaping Tiger Gorge) we'd have to go over passes higher than 3000m which is theming at which I start feeling extremely ill with altitude sickness. Please advise!