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Mark Doiron - Oct 29, 2008 9:30 am - Hasn't voted
Re: BravoYou may be right. Much of the rock around here is quite solid granite. However, it's also common to find rock that, when you walk across it, gives an almost "hollow" sound. And, if you search around, you can find where the rock has large sheets that are loose and hollowed out underneath, with a few holes exposing their condition. Thanks for looking, Olpinist! --mark d.
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