POSTED: 10:18 a.m. HST, Jan 1, 2011
The world's longest continuous volcanic eruption is marking its 28th anniversary this month.
Kilauea Volcano's east rift zone began erupting on Jan. 3, 1983 and has continued uninterrupted since.
A second, simultaneous eruption began at Kilauea's summit on March 19, 2008.
The Hawaii Volcano Observatory together with Hawaii Volcanoes National Park, Hawaii County Civil Defense and the University of Hawaii at Hilo plan to mark Monday's milestone by hosting public lectures, guided hikes and other activities throughout January.