Just west of Manele Bay and the First Cathedral dive site, Knob Hill is a veritable playground of lava formations, with lava-rock ridges, tubes, fingers, and overhangs that sprawl across a wide swath of sea floor. Depths range from 40 to 55 feet,

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Just west of Manele Bay and the First Cathedral dive site, Knob Hill is a veritable playground of lava formations, with lava-rock ridges, tubes, fingers, and overhangs that sprawl across a wide swath of sea floor. Depths range from 40 to 55 feet, making this a good dive for all experience levels and allowing a lot of bottom time to explore the seemingly endless swimthroughs, canyons, and pinnacles. The expansive reef lies in close proximity to open ocean, so there's also an impressive variety of both nearshore tropical fish and big pelagics.

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