I hope you've enjoyed this look back at past hikes from a new perspective. Whether your next hike takes you down a river, up a mountain, across a desert or through the forest, you'll likely see cairns along the way. If you find one that you think is noteworthy, intriguing or inspirational -- and want it included here -- please send it along with the 'when and where'.

Please don't build your own and then photograph it -- but please do share a cairn you've passed and admired along your journeys.