Garny Gorge

If you are making the obligatory visit to Garni and Geghard, you should take the opportunity to visit the Garni Gorge. It is only possible for those who can walk down, or have a car, since buses do not go down to the bottom of the gorge ordinarily. At the bottom you will see some magnificent sheer vertical cliffs, which look manmade. It is nice and green with a stream and an 11th century bridge. From here, if you are in good shape you can take the hike to Havuts Tar, which is a very rewarding trip which very few people know about, and even fewer reach.
Below is the Rediscovering Armenia Guidebook information about Garni Gorge.

The Garni Gorge* and Khosrov Reserve entrance by car: Though the Garni Gorge can be entered on foot by taking a steep, rough path from the left side of the temple parking lot, one can also drive. The first of two vehicle entrances to the Garni gorge is reached by taking the paved road to the right about 1 km W of Garni. Continue straight over the bridge, then turn left at the cement wall (straight goes to a mysterious Physics Institute), and left again on the dirt road where the dachas begin. A narrow dirt road, barely passable for street cars, descends into the gorge and E along the river past wonderful rock formations and pleasant picnic places, joining up with the other road from Garni village. Note that beyond the Physics Institute, another road dead-ends at the bottom of the gorge at a small hydropower station. There is a footbridge across the river just upstream, leading to an excellent set of walking trails following the river.