

Indigo Tunnel is a short, brick-lined railroad tunnel beneath the Potomac near Little Orleans that yields dramatic reflections, strong leading lines and moody low-light scenes. Access is via the C&O Canal towpath (short walk), no entry fee; park at nearby pullouts on MD-281/Canal Rd. Best at sunrise or late golden hour when side light grazes the bricks, or on overcast days for even texture. Expect mosquitoes in summer and possible standing water; wear waterproof shoes. Check NPS alerts for trail


Indigo Tunnel is a short, brick-lined railroad tunnel beneath the Potomac near Little Orleans that yields dramatic reflections, strong leading lines and moody low-light scenes. Access is via the C&O Canal towpath (short walk), no entry fee; park at nearby pullouts on MD-281/Canal Rd. Best at sunrise or late golden hour when side light grazes the bricks, or on overcast days for even texture. Expect mosquitoes in summer and possible standing water; wear waterproof shoes. Check NPS alerts for trail