Image: Cutting devine hill

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Description: Cutting made by convict workers who would hammer a crowbar-like 'jumperbar' into the rock, fill the hole with gunpowder, plug the hole and ignite it. Visible are metre-long 'half holes' that remained after the rock face was blown away.
Title: Cutting devine hill
Credit: Transferred from en.wikipedia to Commons by Mattinbgn using CommonsHelper.
Author: Conollyb at English Wikipedia
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: https://creativecommons.org/licenses/by-sa/3.0
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