In this task, you are given a context tweet and an answer. Your job is to generate a question for the given answer based on the given tweet paragraph. Note that your question should be answerable based on the given tweet, and the answer to your question should be the given answer.

Context: What works: World's most expensive road cuts thru mountains and across rock strewn rivers But is it vfm? #CNNSochi Ben Wyatt (@BenWyattCNN) February 4, 2014 Answer: rivers
other than mountains, what else does the "worlds most expensive road" cut through?