The Windward Islands, also known as the Islands of Barlovento, are the southern, generally larger islands of the Lesser Antilles. The Windward Islands are called such because they were more windward to sailing ships. The geology of the Windwards is volcanic, with craters, hot springs, and sulfuric vents found in the mountainous central ribs of the islands. The climate of the Windwards is marine, and the extreme tropical heat is greatly tempered by the steady trade winds and daily sea breezes.