| Community with forums, searchable clues, trip planner, recording of finds, event listings,... Category: Recreation: Outdoors: Letterboxing | |
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| Includes a forum, image gallery, map of the area, contact details, and the history of the activity. Category: Recreation: Outdoors: Letterboxing | |
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| Silent Doug's Letterboxing Site Articles including getting started, outdoor ethics, and explanation of cryptic letterboxer codes.... Category: Recreation: Outdoors: Letterboxing | |
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