I recommend reading "The Source" before visiting since it will give you a real sense of the history of the site. Things that stick in my memory are how the stones fit together so well without mortar. Of course, the water tunnel is the star of the trip. I don't think I was able to walk all the way to the well but it still is memorable. Of course the other guidebook for anywhere in Israel is the Bible. Definitely a must see. (I went there in 1973)
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