Following my site posts, does anyone know anything about Carrock Fell hillfort? All I can find is that it is "ancient British" and is of "indeterminate age". It appears to be Iron Age to me, but is unusual in its altitude, 2,174 feet above sea level. It's well worth a visit, and is very lonely. I arrived at the end of a 7 hour day wandering on the fells, so didn't have very long. I descended the steep slopes to the valley like an ancient Britton, with creaking knees. I only saw two other people all day.