Full Breakdown
Lava Flows Disrupt Key Highway on Réunion Island Following Eruption
3/17/2026, 1:32:35 AM
Overview of the Eruption and Its Impact
On March 13, 2026, lava flows from the Piton de la Fournaise volcano crossed the RN2 coastal road on Réunion Island, severing a crucial transport link between the southern and eastern regions of the island. This event marked the first time since 2007 that lava had crossed this highway, which is also known as the "Lava Route." The eruption began on February 13, 2026, and has continued to produce active lava flows, prompting authorities to raise the volcano alert level to phase 2-2 on March 12.
Details of the Lava Flow
The first lava flow reached the RN2 at approximately 8:00 a.m. local time, followed by a second flow at 9:27 a.m. The flows covered sections of the roadway, with the first flow measuring 15 meters in length and 1.5 meters in height. At the time of the crossing, the active flow front was about 670 meters from the ocean. The RN2 is the primary coastal route connecting communities along the southeastern coastline, and its closure has necessitated longer inland detours for travel between the rural towns of Saint-Philippe and Sainte-Rose.
Historical Context of Eruptions
Piton de la Fournaise, a UNESCO World Heritage site, is one of the world's most active volcanoes, typically erupting every nine months. The volcano's eruptions are characterized by effusive lava flows rather than explosive activity. Historically, lava has crossed the RN2 highway seven times since 1977, with the most notable incident occurring in 1977 when a flow nearly destroyed the Sainte-Rose church, which has since become a tourist attraction known as Notre-Dame des Laves.
Official Statements and Responses
The prefecture of Réunion announced the closure of the RN2 as a precautionary measure on March 12, following monitoring that indicated the advancing lava was approaching the road. The local authorities emphasized that the eruption is occurring in an uninhabited area, posing no immediate danger to residents or property.
Criticism and Opposition
While the eruption has drawn interest from residents and tourists eager to witness the natural phenomenon, there are concerns regarding the disruption to daily life and traffic on the island. The rerouting of traffic has increased travel times significantly, from thirty minutes to over two hours for some routes.
Conflicting Reports and Gaps
There are no significant discrepancies in the reports regarding the eruption and its impacts. However, the exact long-term effects on local infrastructure and tourism remain to be fully assessed.
What's Next
As the eruption continues, monitoring efforts by the Piton de la Fournaise Volcano Observatory will remain crucial to assess the ongoing lava flows and any potential hazards associated with the interaction of lava with seawater, which can produce steam plumes and localized hazards.
Verbatim Quotes
“Lava flows from Piton de la Fournaise occasionally reach the coastal road corridor during eruptions occurring on the volcano’s southeast flank.” — Piton de la Fournaise Volcano Observatory
“The progression of the flows remains very irregular, especially due to the topography of the Grand Brûlé and the vegetation encountered along its path, which can slow down or channel outflow,” — Piton de la Fournaise Volcano Observatory
