There are a number of different types of collagen; the most prevalent two in the human body are types I and III. In fact, type I collagen is the most abundant protein in the human body â it is present in almost every type of tis-sue.1 Bone contains almost exclusively type I collagen. The collagen network in bone confers structural strength
1 See some of Oahuâs gorgeous beaches â Kailua and Lanikai beaches. Some consider Lanikai Beach to be the most beautiful in the world. See our post on visiting beautiful Lanikai Beach.  Byodo-In Temple near Kaneohe is simply stunning.
Diamond Head Overview. 1  Diamond Head is an extinct volcano and a popular visitor attraction on Oahu. 2  You can hike up to its 760-foot-high peak, but be prepared to climb stairs. 3  Amazing views of Honolulu, Waikiki and the vast ocean await at the top; on clear days the neighbor islands of Molokai and Lanai can be seen on the horizon.