My wife and I asked locals about which Mine Tour to do and they said to head to the Eagle Mine just up C Street there in Julian. We took the tour with another 20 something couple and guided by Carl. His grandparents had bought the mine in the 60's and Carl grew up in Julian. Nice temperature change from outside. Carl took us into the mine with stops along the way to explain different points and techniques and answer our questions. It was quite enlightening. We headed out another mine which had purposefully met the Eagle. Well worth the money. Carl certainly knew all about the hill and catacombs of mines. We recommend it for probably 10+. Not sure what family member some visitors had run into, but Carl was excellent.