I believe Kaindy Lake is one of the most beautiful lakes you’ll ever see.
A little information on the lake: Lake Kaindy is located 129 kilometers (80 mi) east-southeast of the city of Almaty and is 2,000 meters (6,600 ft) above sea level. The lake was formed as the result of a major limestone landslide triggered by the 1911 Kebin earthquake forming a natural dam. It blocked the gorge and was filled by mountain river water. Lake Kaindy is about 400 meters long, reaching depths of nearly 30 meters at its deepest point. Altered by limestone deposits, the water maintains a bluish-green color. The lake contains trunks of submerged Asian spruces that rise above the surface of the lake. The area is often referred to as a "sunken forest". The cold water helps preserve the tree trunks, which are overgrown with algae and various other water plants.
The easiest way to get to the lake (if you don’t have a car of your own) is to join a two-day bus tour, which takes you to Kolsay Lakes on the first day (another absolutely stunning lake in the area) and to the Kaindy lake on your second day. You will be staying in the Saty village, from which you will be taken to both lakes. There is no paved road leading to the Kaindy Lake so the only way to get to the lake (besides walking, which will take a very long time) is by an off-road vehicle. 40 minutes of a VERY shaky ride will get you there. Once you are dropped off, there is another 40-50 minute walk to the lake. Instead of walking you can also ride a horse up there, which is not expensive and way fun. In July 2019 we paid 3,000 tenge one way ($7-8). Don’t forget that you are in Asia, so it never hurts to bargain :) You can also ride a horse down from the lake. Once you get to the lake there’s a viewing point right on the shore. From there you can walk (15-20 minutes) to the so called “Stone Gates” or “Wishing Gates”, which is on the other side of the lake. You will be able to see it from your first viewing point. Stone Gates is where the water flows into the lake. You are not allowed to swim in the lake, but people still jump into the freezing water for the experience… If you decide to walk to the Stone Gates I would advise getting a pair of sandals or flip-flops to change into, so you could walk through the shallow waters closer to the lake to take some beautiful shots of the lake (closer to the spruces).
The cache is located on the road leading from the first viewpoint to the Stone Gates. 1/3 of your way up there you will see a large open space on the road. Check out the gallery for views from this spot. 
It is also a common hang out place for horses and their owners. There’s a rocky wall on one side and that’s where the cache is hidden. It’s an average size plastic container covered with rocks. A tall pine tree right above it is your main reference point. There’s no service at the lake at all, so getting the right coordinates was really tricky. I would appreciate if fellow cachers with GPS helped me with adjusting coordinates in case they are off. Message me for more details and pictures on the cache location if you are planning a trip to the lakes. It’s not a place that you can easily return to, so it’d be sad to leave without finding a cache!
Enjoy the lake and make sure to avoid horse poop! :)