The first thing I come across is a tunnel burrowing through a hill. This tunnel was originally built the proper size, but, after being walled up, there were indications of a general cave-in; so the company had to go to work and build another thick rock-wall inside the other, which leaves barely room for the trains to pass through without touching the sides. It is anything but an inviting path around the hill; but it is far the safer of the two.