There is another set of caves under Brendan's Cave in Utah. You have to squeeze through a fat man's misery and then crawl fifty feet and fifty five degree angle. Once down you will find a huge cavern of mimic crystals. Any sound you make they will duplicate. It's not an echo and if a new sound is not given they will go on repeating it for days. After Brendan's death his wife would come down here and sing sad songs.
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