kazakh lake where people drink the monster's wake water for healing — anyone been?

Found a料 I can't verify and want someone who actually reads Kazakh sources to weigh in. Lake Kök-köl, Zhambyl region, southern Kazakhstan. The local creature is the Aidakhar (айдаһар). What got me is it's not framed as a scary Nessie at all in the local telling — Kazakhs apparently regard Aidakhar ……