This is an aerial view of Kohala Ranch on the left and Kohala Estates on the right. The main road, Akoni Pule Highway, runs across the photo just above the coastline. The dark strip running across near the top of the land is Kohala Mountain Road, the darkness being the trees which line much of the road.
Kohala Ranch is a gated community which spans the space between these two roads. Near the bottom, houses are built on lots of one to three acres. Midway up the hill are five acre lots, and toward the top are bigger lots of 10 and 20 acres. The community has access to both roads. The top of the community gets more rainfall, and more wind, than the lower sections. Kohala Estates connects only to the bottom road.
Communities such as these are fairly common on the Big Island. Some are gated, some not, but most cater to people moving to the island from elsewhere since the property prices tend toward the upper end of the market.