[1] Krylos is located on the site of the Princely city center of Halych;[2] according to the website of Verkhovna Rada of Ukraine the settlement was founded in 898 AD.

Immediately to the west of the Krylos settlement flows the Lukva River, which in ancient times was wider and deeper than it is today.

On the east side of the Halych citadel flowed a small creek that with its valley provided an additional defensive barrier.

On top of the hill where the local Assumption Cathedral (Ukrainian: Галицький Успенський собор) displayed its stature to the surrounding landscapes, a series of tall defensive earth ramparts were built that served as the defense barriers in the past.

[7] Krylos is now a village with remains and the partially reconstructed Assumption Church, considered to be from medieval times.