The Loanhead Railway path crosses the High Street next to the post office. Follow the signs to reach the old trackbed and proceed in the direction of Roslin village (the chapel is spelled Rosslyn). We soon encounter the steel Bilston Glen Viaduct, the longest lattice-work span in Scotland at 150 yards. The height of 140 feet provides panoramic views across the treetops. Maintain a straight course towards Roslin. Frequent signposts ensure you can't go wrong. The Original Rosslyn Inn appears on the right and taking a left down Chapel Loan leads to the now world-famous building. A limited view of the iconic stonework can be had from outside the boundary walls. An admission fee (£9.50 at time of writing) is payable for the full experience.
Use the reverse route to begin the return leg. You could simply retrace your steps all the way back to Loanhead but a circuit can be formed by turning left into the woods at the Battle of Roslin memorial stone. At a complex path junction, take the high route bearing round to the left. This hugs the perimeter of a plant nursery before giving way to an access road. Keep going until you meet the B7006. Turn right and follow the pavement all the way to the junction with the A701. Turn right again and walk as far as the junction with Seafield Road. A green sign points back into the woodland directly opposite, next to a bus shelter. We soon meet our second railway bridge of the day - a stone viaduct that once carried a pit line. Climb up on top and cross the burn, bearing left at the opposite end. The path skirts a field with fine views of Dryden Tower. Look out for the intermittent signs that guide you back to Bilston Glen Viaduct.
