Continental Convergence
When two continental plates meet, neither plate is subducted, instead the Earth's crust buckles and crumbles, forcing mountains of area upward to high level ground called plateaus. When the Indian plate converged with the Eurasian plate 50 years ago, the slowy uplift over millions of years forced up the highest continental mountains in the world, the Himalayas. It's also pushed up the Tibetan Plateau. Although Tibetan Plateau is relativly flat, it's higher than the Alps mountain range in Europe.