It’s automatic: I always hold my breath when I walk through a tunnel. Too many years living in cities, where most subterranean sites reek of urine. 

But the tunnels of Reston smell only earthy or musty — and sometimes not even that, depending upon length and time of year. 

Which leaves me free to contemplate the road I’m scooting beneath, the traffic above and the crushed leaves below. The overpass and underpass. Two modes of travel, two ways of life. 

Reston believes in foot traffic, so it only makes sense that Reston believes in tunnels.

(One of Reston’s 25 underpasses.)