(Image: Moondigger, cc-sa-3.0)

This week’s link round-up includes a range of fun subjects from abandoned places and urban exploration to bizarre architecture, hidden symbolism and incredible slot canyons.

Abandoned Powell Lake Rail Line Connector, British Columbia (Vanishing History)

15 Most Incredible Slot Canyons on Earth (Environmental Graffiti)

Abandoned Technology Scattered Across the Globe (Device Magazine)

Nature Photos on Urban Billboards Show City-Dwellers What They’re Missing (Treehugger)

Yosemite National Park, California (randomSPACE)

20 Clever Logos with Hidden Symbolism (Twisted Sifter)

UFO Houses: Ruins of the Future (Trigger Pit)

Apocalypse Today: The Allure of Bad Theory (Jeff Wise)

Power Plant Abandoned Sublevels and Tailraces (Action Squad)

Architectural Blunders and Atrocities (Dark Roasted Blend)