 In the latter half of the 9th century there was an attempt to revive royal power at the much diminished city of <unk> , as evidenced by a stela erected in the Great Plaza by <unk> Chan K 'awiil II in <unk> . This was the last monument erected at <unk> before the city finally fell into silence . The former satellites of <unk> , such as <unk> and <unk> , did not last much longer , <unk> their final monuments in <unk> . By the end of the 9th century the vast majority of <unk> 's population had deserted the city , its royal palaces were occupied by squatters and simple <unk> dwellings were being erected in the city 's ceremonial <unk> . The squatters blocked some <unk> in the rooms they <unk> in the monumental structures of the site and left rubbish that included a mixture of domestic refuse and non @-@ <unk> items such as musical instruments . These inhabitants reused the earlier monuments for their own ritual activities far removed from those of the royal dynasty that had erected them . Some monuments were <unk> and some were moved to new locations . Before its final abandonment all respect for the old rulers had disappeared , with the tombs of the North Acropolis being explored for <unk> and the easier to find tombs being looted . After 950 , <unk> was all but deserted , although a remnant population may have survived in <unk> <unk> interspersed among the ruins . Even these final inhabitants abandoned the city in the 10th or 11th centuries and the <unk> claimed the ruins for the next thousand years . Some of <unk> 's population may have migrated to the <unk> Lakes region , which remained heavily populated in spite of a <unk> in population levels in the first half of the 9th century . 
