Now that winter is really here, our outdoor adventures on the rail trail are on hold.

But we discovered that every building at the VA is connected by tunnels so we go for long rambles through the complex.

Some are half-tunnels, like this one, where half-round windows throw bright half-moon shapes on the walls.

The tunnels are always sparkling clean. They might look a bit sterile, but for my vet and me, they are a magic gateway to a winter of exploration.