根据以下要点用英文写作。
旅行使人开阔眼界，增长见识。假设你是李华，上周末你参加了你班去云南的夏令营。请根据以下信息，以“An Unforgettable Travel Experience”为题写一篇短文，记录一下这次夏令营的经历。
Where: Yunnan
When: last weekend
With whom: teacher and classmates
Activities: climb the mountain, have a picnic, sing
Feeling: tired,excited and happy
注意：(1)文中不得出现考生个人真实信息；
(2)词数80~120；
(3)开头已给出，不计入总词数；
(4)可适当发挥想象，适当增加细节。
An Unforgettable Travel Experience
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