The Hauula Loop Trail is home to various types of flowers like these orchids, and native flowers like alahee. The Single Marine & Sailor Program hiked the trail, Sept. 14, 2013. (U.S. Marine Corps photo by Cpl. Matthew Callahan) - The Hauula Loop Trail is home to various types of flowers like these orchids, and native flowers like alahee. The Single Marine & Sailor Program hiked the trail, Sept. 14, 2013. (U.S. Marine Corps photo by Cpl. Matthew Callahan)