This is a cool little spot hidden away just outside of town.
Use the additional waypoints to get you to the parking spot, then continue along the brushed in road until the trailhead. From here it's a short hike along a rough, brushed out trail towards the timber line. Follow the numerous ribbons and you'll soon find yourself near the feature and the cache.
Please be cautious in the area and try to stick to the rough trails already in place, these are usually marked with pink or orange ribbons. There are numerous features in the area, including windows, passages and resurgences. If you're wondering where the water is coming from, follow the orange ribbons heading SE.
The cache has plenty of room for trackables and trade items. See the hint if you need help.