The Second Battle of the Stronghold (a.k.a. Lava Beds) was a battle during the Modoc War between a band of the Native American Modoc tribe and the Army of the United States, in northeastern California. The battle began on April 15, 1873, and ended on April 17, 1873. The Army succeeded in forcing the Modoc to abandon their fortified position at Captain Jack's Stronghold in the Lava Beds, but failed to capture the band.