Yes. Cornwall was known for its hard rock miners. It took a special kind of miner to crawl half a mile under the ocean in a 4' diameter tunnel lit with candles. The rock formation just off shore shows the direction of the seams that the copper ore formed in. The mine tunnels followed those seams out under the ocean.


Travel is fatal to prejudice, bigotry, and narrow-mindedness, and many of our people need it sorely on these accounts. - Mark Twain