News & Updates
NOTICE: Due to ongoing renovations, Halawa Shaft tours are suspended until further notice. The Halawa Xeriscape Garden remains open for tours. Call (808) 748-5041 for more information.
Descend more than 140 feet underground into the depths of the Koolau to visit a fully operational pump room and walk through a 300-foot tunnel to view a portion of the 919-foot water development tunnel. Tour includes introduction to Oahu's water cycle and guided xeriscape garden tour. Free 90-minute group tour is available by appointment only. Grade 7 and older.
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