ASPEN, Colo. -

Aspen Skiing Co. says Aspen Highlands won't open for the season Saturday as planned because there's not enough snow.

The resort company said Tuesday that Aspen Highlands needs at least eight more inches of natural snow to open.

A new opening date hasn't been announced yet.

Aspen Skiing Co. opened Aspen Mountain and Snowmass on Thanksgiving Day, as scheduled. It plans to open Buttermilk on Dec. 15.

Elsewhere in Colorado, Monarch Mountain has yet to open after originally planning to start its season in mid-November. It relies on natural snow rather than manmade flakes and says nature hasn't been cooperating.