By Ryan Truscott There is an “inland archipelago” of mountains stretching across southern Malawi and northern Mozambique — a chain of hard granite inselbergs lifted high above the surrounding landscape as it weathered down over millions of years. These “sky islands”, as they’re also known, are topped with high-altitude grasslands and evergreen forests and watered by cool moist winds from the Indian Ocean to the east. A group of researchers is now making the case to declare a new “ecoregion” that will strengthen protection for these inselbergs, whose forest patches, thought once to have been li…