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This thermal map shows two small lava pads erupted late on September 15, just west of Nāpau Crater on the East Rift Zone of Kīlauea. This small eruption resulted from magma intruding from the summit into the East Rift Zone, and was associated with an increase in earthquake activity along the East Rift Zone. The largest of the two lava pads was only about 200 m (yards) long.