Still climbing beside the stream, the road finally grew rough and narrow, hemmed by mountains too high and bleak as yet for pasture. I reached a pass where it was completely covered by an overhanging rock, and sat down to compare the directions of my guide-book with the appearances around me. I had come to the conclusion that I was in the wrong path, when two or three miners came under the other end of the rock. They confirmed my suspicions, but told me they were going to Andreasburg by a path over the mountain on our right and if I followed them I should gain what I had lost. This was a fortunate chance; I shouldered my knapsack and took the path, which was so steep and narrow that we climbed single file through the woods. It was half an hour before we reached the summit and I felt like sinking to the earth from fatigue, for my guides were strong-winded and athletic and went steadily forward, without taking breath. I kept pace with them in the descent, and learned from them something of their under-ground life and the extent and productiveness of the mines. This part of the Hartz is very rich in minerals, the mines producing gold, silver, lead, copper and iron. Some of them have been worked seven or eight centuries, and the deep shafts extend more than two thousand feet under the earth’s surface. The great mine at Andreasberg, called the _Sampson_, is said to be twenty three hundred feet deep, and the town is inhabited entirely by the workmen. I have since regretted that I did not spend a day there in visiting these remarkable subterranean works.