Kashmir Great Lakes is a week-long journey through five stunning alpine lakes—Vishansar, Krishansar, Gadsar, Satsar, and Gangbal. You're crossing mountain passes around 13,000 feet, camping in ridiculously green meadows, and dealing with real altitude. Best done July-September when wildflowers bloom everywhere. It's moderately tough but one of India's most beautiful treks, hands down. http://kashmirgreatlakestrek.com/