My focus is on Basque music, language, and local geography and history. I have created or largely contributed with text and sometimes pictures and maps at least to the following articles:
Basque music, Txalaparta, San Sebastián, Itoiz, Benito Lertxundi, Gipuzkoan, Zuberoan, Soule, Maskarada, Pastoral, San Adrian tunnel, Oiasso, Agurain, Bidasoa, Nivelle, Oria, Adarra, Aiako Harria, Jaizkibel, Lower Navarre, Hernio, Txindoki, Ganboa, Aralar, Aizkorri, Euskaldunon Egunkaria, Egin, Tamborrada, Siege of San Sebastián, Novempopulania, Occitan, Navarro-Aragonese, Urgull, Siege of Narbonne (752-759), History of the Basques, Battle of Roncevaux Pass (824), Battle of Toulouse (721), Spanish conquest of Iberian Navarre, Umayyad conquest of Hispania, Uqba ibn al-Hajjaj, Abd al-Malik ibn Katan al-Fihri, Islamic invasion of Gaul
I increasingly engaged in the Basque Wikipedia some years ago, becoming an active editor and member of the Basque Wikimedians User Group (EWKE-BWUG) since its establishment in 2016.