Many of them have been protected as parks or non-residential development, such as ball fields, and so they stand out as green circles of vegetation against the surrounding gray and white cityscape.

• 许多火山被保护起来成为公园，有些则作为不开发的非居住区，例如作为球场，因此这些被植被覆盖的绿色圆形高地与周围灰白色的城市景象形成鲜明对比。