Surface stoniness ranges from very stony to extremely stony. The A horizon has hue of 7.5YR or 10YR, value of 2 or 3, and chroma of 2 or 3. The B horizon has hue of 5YR through 10YR, value of 2 through 4 and chroma of 2 through 4. These are the Hilo and Olaa soils. Hilo soils are more than 60 inches deep, have volcanic ash bands and prismatic structure in the B horizon.
Olaa soils have a fragmental control section.
Hana soils are on uplands. Slope is 3 to 25 percent. Outcrops of basalt are common. Elevation ranges from sea level to 1,200 feet. The soils formed in volcanic ash over cinders and Aa lava.