The season is running out for this area of bouldering in Skamania County, Washington. At around 2800 feet of elevation, once the snow flies, the only way to get there would be by snowmobile. There are also two other developed areas, Three Ravens Boulders and Sasquatch Hideaway, all within a few minute drive from each other. Multiple free campsites are available, Bigfoot is nestled in the woods, Three Ravens boasts a view of Mount Hood and has more of a wind factor.
The last dependable weekend is usually Halloween, but I've been up at Three Ravens as late as Thanksgiving.
