This is the normal traditional put in for the Cascades. You'll likely want to put in here if you are running laps on a non-release natural flow day, or if you are riding a commercial shuttle up to the Cascades on a release day. Drop-off and parking in this zone though gets really hectic on scheduled release days, so it is better to drive up the dirt road and park well off the road. This eases traffic problems on release days. No matter what, please obey all signs and do not park in a manner that impedes traffic.