Situated in the Tian Shan mountains of Kyrgyzstan, what endorheic lake is the second-largest alpine lake in the world by area, after Lake Titicaca?

Issyk-Kul

Issyk-Kul translates to 'warm lake' in Kyrgyz because it never freezes despite being surrounded by snow-capped peaks. It is a Ramsar site recognized for its significant biodiversity and importance to migratory birds.