En las montañas de la locura
| Book | At the Mountains of Madness |
| Format | Paperback |
| Language | Spanish |
| Copyright | 1962 |
| Author | H. P. Lovecraft |
| Publisher | El Observador |
| Series | Cada dia la millor novel·la d'intriga |
| Published in/by Arrangement with | Ediciones Acervo |
| Translated by | José Mª Roca |
| Cover Art by | Esther Utrilla, Pepe Far |
| Format | Paperback |
| Language | Spanish |
| Location | Barcelona, Spain |
| Copyright | 1962 |
| This Edition Published | 1991 |
| Pages / Font | 122 pages |
| ISBN 10 | 8470020404 |
| DL (Spanish) | B-31.157-91 |
| Series Number | 50 |
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