Went to the Lose Mine yesterday. Well...that's what we call it because we got lost the first five times or so we drove there. It's the Almaden Quicksilver Mine in San Jose. When we left, it didn't seem that bad, heat wise, but I didn't take into account that it would be hotter there and that most of the trails (if not all) are uphill. We took two shorter walks from different entrances.