It was erected in the mid-ninth century in the lands of the former Avar Khaganate against the threat of Great Moravia and lasted only as long as the strength of that state.
See tekkis 9. sajandi keskpaigas endise Avaari khaaniriigi maadel Suur-Määri riigi ohu vastu ja kestis vaid nii kaua, kui selle riigi tugevus.