Complex sentence: The President Thiers Bank close to Raivavae may also be linked to the Foundation hotspot, and the 135 million years old Magellan Rise may be an oceanic plateau formed by the Foundation hotspot and thus its oldest volcano.
Split into simpler sentences: The President Thiers Bank close to Raivavae may also be linked to the Foundation hotspot. The 135 million years old Magellan Rise may be an oceanic plateau formed by the Foundation hotspot and its oldest volcano.