The parkland-style Greenback Course was opened in 1972 and has been a Portland favorite ever since. Its traditional design features large elevated greens, tree-lined fairways, six ponds and 86 bunkers. The 6,638 yard, par-72 layout is attractrive to beginners and seniors, offering a moderate challenge in a beautiful setting. The parkland-style Greenback Course was opened in 1972 and has been a Portland favorite ever since. Its traditional design features large elevated greens, tree-lined fairways, six ponds and 86 bunkers. The 6,638 yard, par-72 layout is attractrive to beginners and seniors, offering a moderate challenge in a beautiful setting.