To get to Hidden Canyon, take the shuttle to Stop 7, the Weeping Rock. Follow the main path, which Weeping Rock Trail, Observation Point Trail, Hidden Canyon Trail, and East Rim Trail all start at.
Like Angels Landing, this hike has some dangerous and narrow paths. At a couple points, chains attached to the rocks help you along the sides. There are nowhere near as many areas with chains as Angels, but if you're afraid of heights, take this into consideration.
Before you get to the actual Hidden Canyon trail, you take a steep path full of switchbacks (seen in the first picture below). This is where most of the elevation comes into play. This path is more heavily trafficked than the actual Hidden Canyon Trail.
When you do reach the trail, you have the option to climb a short distance higher to a lookout point, or continue down into the canyon. Do both!
Heading into the canyon it was nice and cool, and there were some options to explore "off path". There are some areas where exploring is not allowed, marked by signs (Please respect them!). This part is relatively flat, but there are some areas where climbing is needed to continue. I had a ton of fun climbing up on top of rocks and exploring little nooks and crannies. Definitely a good place to explore or sit and eat. I wouldn't miss this one if you're planning on doing several hikes!
Since this hike was shorter, I decided to stop by the Weeping Rock on the way down. This adds around 30 mins to your hike, if even that. The trail is not even half a mile, and is very easy. It is very heavily trafficked since it is the shortest and easiest hike at Stop 7. It was worth a quick look. I didn't stay long due to all the people, but it had a nice view and was cool to see water dripping off the walls.
Take away? Hidden Canyon is a nice hike away from all the crowds and (if you're afraid of heights/cliffs) totally worth the chains and steep drop-offs!!