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Spiral staircase - 05.31.04
submitter: Erin
location:Montreal
This was incredible- a spiral fire staircase on the ground (great fun to climb on!), with two mats underneath!
category:The Untouchables!
comments:1
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wim commented on 04.03.10
we would call this a spiral trap, a passive trap for quantifying barnacle larval supply to semi-exposed rocky shores