Complex sentence: Neahkahnie Mountain is a mountain on the Oregon Coast, north of Manzanita, Oregon and its rumoured lost treasure, hidden by Spanish sailors in the early 1700s.
Split into simpler sentences: Neahkahnie Mountain is a mountain on the Oregon Coast, north of Manzanita, Oregon. It is rumoured to have a lost treasure, hidden by Spanish sailors in the early 1700s.