coprolite9000, 11 months ago to Seattle

#SubterraneanSaturday - the #monorail #tunnel beneath SeaTac airport, south of #Seattle. I'm pretty sure I've seen this exact place in at least one video game...

February 2013.

coprolite9000, 1 year ago to SanFrancisco

For #subterraneanSaturday - a large concrete corridor under a hillside (see a previous photo!), part of the old artillery bunkers overlooking the Golden Gate Bridge.

Golden Gate National Recreation Area, #SanFrancisco, February 2011.

#concrete #brutalism #dereliction #abandonedPlaces