Petroglyps are the traces left by the first peoples settled in Galicia.     Our language still maintains some traces of the former habitants of Galicia: those of pre-indeuropean origin and the celts. Therefore we can find in contemporanean Galician words like "amorodo", "lastra" "veiga", etc. and celtic words such as berce, bugallo, croio ... which arrived to our language directly or through Latin.