A 13th Century castle, but without the usual gift shop and tourist buses,nice bricked up 16th century Elizabethan mullioned windows. The castle was a ruin in 1309, habitable again in the Civil War when it was destroyed in 1647
Part of the coastal line to Whitby, closed in the late 1950’s.
The 250m long tunnel is gently curved, still in very good condition internally and open at both end, the collapsed section is just a small side tunnel and may well just be back-filled escape tunnel.
You emerge on to a very overgrown trackbed on the cliffs edge, i’ll continue along to the Sandsend tunnel another day.