What is "shiroyama"

is a Japanese name that means Castle Mountain. While it is a surname, it is also a common name for numerous mountains and hills across Japan, and may indicate that a castle once stood on that particular mountain. The former grounds of some Japanese castles have been developed into parks called "Shiroyama". In English language maps of Japan, a mountain called Shiroyama is sometimes labelled "Mount Shiroyama" or "Shiroyama Mountain", but this is redundant as the term -yama means mountain.