Vennemann argues that after the last Ice Age, much of Western and Central Europe was inhabited by speakers of Vasconic languages , of which Basque is the only surviving member.
He identifies structural similarities between Insular Celtic languages (like Irish and Welsh) and Semitic/Hamitic languages, such as Verb-Subject-Object (VSO) word order. Europa Vasconica-Europa Semitica
Structural similarities like VSO word order may be typological coincidences rather than proof of direct contact. Vennemann argues that after the last Ice Age,
He points to Old European hydronyms (river names) across the continent, which he reinterprets as having Basque-related origins rather than Indo-European ones. Europa Vasconica-Europa Semitica