The evolution of the language and culture of Kerala has also been influenced by contacts with the Tamil and Kannada regions. The southern dialect of Malayalam shows traces of Tamil influence while the north of the state show traces of Kannada influence. The customs and manners of the people in the extreme south and north of the state show traces of infulence from the adjoining Tamil and Kannada districts respectively. The influence of Pallava, Chalukya and Vijayanagar styles may be seen in the temple architecture and sculpture of Kerala. The Tamil influence is preceptible in the high ranges and some of the adjoining areas in Idukki district.