- 1 v. (unpaged) : ill. (some col.) ; 24 cm.
- Corporate Author
- Fundación Telefónica (Madrid, Spain)
- "The key, an instrument that closes or opens, at our convenience, our own spaces of safety ... profile of a key bears a close resemblance to the relief of a mountain range, of a chain of mountains, and allows the artist to invent a landscape of security on the basis of these keys-cum-mountains."Text in Spanish and English.