Jacumba Hot Springs / Jacumba Peak
Jacumba is a small town right at the US/Mexican border, about 60 miles east of San Diego. It's known for the sulfur containing hot springs, which were most likely already used by the Kumeyaay people. The commercialization of the hot springs began in the early 20th century. In 1919 rail service connected Jacumba to San Diego and 6...