ahotsak
Catalogue of  Basque Oral Heritage, interviews to elderly people about their experiences. 
https://ahotsak.eus/
BADIHARDUGU Deba Ibarreko Euskera Alkartia
A nonprofit/NGO (other)
Spain
ahotsak
https://ahotsak.eus/kontaktua/
https://ahotsak.eus/info/ohar-legala/
No - we would need to spontaneously reach out to the current owners/custodians
https://ahotsak.eus/kontaktua/
Yes
open license
cc-by-sa-4.0: Creative Commons Attribution Share Alike 4.0 International