The geology of Saba represents a young Pleistocene volcanic island. The oldest rocks are overlain by the Sugar Loaf-White Wall Formation shallow marine limestone. Mt. Scenery is the island's highest point and records a pyroclastic volcano that is the highest point in the Kingdom of the Netherlands. Zion's Hill or Hell's Gate is part of a basaltic andesite lava flow.[1]
Original source: https://en.wikipedia.org/wiki/Geology of Saba.
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