Detailed Instructions: Given a scientific passage and an answer, generate a question for the given answer.
Q: Passage: The Karakoram Range is part of the Himalaya Mountains. K2, pictured here, is the second highest mountain the world at over 28,000 feet. The number and height of mountains is impressive. Answer: k2
A:
What is the second highest mountain in the world, at over 28,000 feet?