You know that grammatical “rule” about not ending a sentence with a preposition? Well, who ever decided finishing off a sentence like that is a bad thing? (Personally, we think it’s one of the silliest things anyone ever came up...
sky island n. an isolated ecosystem occurring at a high altitude, such as on a mountain top, which shows evolutionary tendencies similar to those occurring on islands surrounded by water. (source: Double-Tongued Dictionary)