After finding GC8DV4Z, go back out on the trail and take a left, and follow the trail that contours the stream. You'll see a bridge on the left going over the stream. Cross it and follow the trail to the GZ. It's a camo pill bottle, hidden very well. Please replace as you found and make sure to return it with the bottle oriented cap side down. Cover it well!
The entire hike from this cache back to the parking area one way (or vise-versa) is roughly 1.13 miles and shold take you no longer than 26 minutes, so these two caches from start to finish should take one hour. Please obey park hours, which are Mid-March through October 31: Monday-Sunday 8am-8pm; November 1 through Mid-March: Monday-Sunday 8am-5:30pm.