Lava flows also moved into the sea east of the island, creating new land that would eventually add over to the island, and into the eastern parts of town, destroying several hundred houses. The flows were thick and blocky aā lava (Icelandic: ) flows, and covered the ground to average depths of about 40 metre (130 ft), reaching 100 metre (330 ft) thick in places. Later on in the eruption, a surge of lava destroyed one fish processing plant and damaged two others, and also demolished the town's power generating plant.