Libru is a village in Agder county, Norway. The village is located in both Arendal Municipality and Froland Municipality. The village lies at the southern end of the lake Assævannet, about southeast of Blakstad in Froland Municipality and about from the town of Arendal in Arendal Municipality. The village of Rise lies along the Arendalsbanen railway line, about to the southwest of Libru.

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