Big Island officials are bracing for the possibility that frequent earthquakes will cut off a major highway.

Emergency officials dealing with the Kilauea Volcano eruption are turning their focus to the aptly named village of Volcano, where dozens of small earthquakes shake the ground every hour as Kilauea undergoes dramatic changes. The summit caldera is also collapsing, causing even larger temblors almost daily.

Officials are worried about cracks and holes in Highway 11, a 45-minute lifeline connecting a rural district with Hilo, the island’s biggest city. The alternative, driving around the state’s largest island, can take up to three hours.