The MAYOBS2 cruise took place from June 11 to 17 aboard the Marion Dufresne.
The first cruise had revealed the existence of a submarine volcano in formation, off Mayotte, a volcano located 50 km from the island and 3,500 m deep.
The results of this second cruise were presented at a press point in Mayotte on June 24th.
A lava flow located 2 km southeast of the volcano was discovered. This would come from cracks located nearby. The mission also found that the volcano has not changed in size and the number of earthquakes is decreasing.