A Big Island man faces up to 20 years in prison after pleading guilty yesterday to two counts of commercial promotion of marijuana in connection with a large-scale pot farming operation on a Volcano ranch.

David Finley Jr., 65, was arrested during a Jan. 29, 2007, raid in which police found three indoor growing operations on Finley's property, equipment for manufacturing hashish and more than 75 pounds of dried marijuana and other drugs. Among the items seized were 127 sealed 1-ounce packets labeled with prices of $280 to $300.

Finley could be sentenced to probation, or could face a 20-year prison term for each of the two counts of first-degree commercial promotion of marijuana when he is sentenced April 22, according to deputy prosecutor Rick Damerville.