Grow-ops a danger zone

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Hikers should take care if they stumble across illegal marijuana grow-ops because they can be rigged with booby traps such as spike boards, bear traps and lines of fish-hooks, provincial police warn.
Marijuana plants are bright-green and can be up to 1.5 metres high. The leaves are jagged and the plants give off a pungent, musty odour.
Clues that a grow-op may be near include abandoned bags of fertilizer, trails in swampy areas and numerous No Trespassing signs in the bush.