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.
Q: Context: I'm all about that base. Reached the base layer of Mt Sharp. New science ahead! Curiosity Rover (@MarsCuriosity) September 11, 2014 Answer: mt. sharp
A:
which mountain has had its base layer reached?