Zion National Park may not have trains but it’s already got a subway. The canyon’s natural Subway is spectacular tunnel sculpted by two curved canyon walls. Deep inside the tubular tunnel glimmers of sunlight trickle into the darkness, allowing algae to grow in the water filled potholes.
The green flora creates an eerie turquoise glow that radiates throughout the spectacular chamber. The crystal clear water splashing through this picturesque setting meanders over polished rock to the open canyon below.