Remains of the murdered novice Tentudía that were isolated from the rest so she could not receive a holy burial.
"Who was Tentudía, you ask? Well, she was once a girl born in this same yellowish village of Albero, like you and me. On her fifteenth year, something extremely unusual happened. Her parents watched as part of her hair began twisting, unavoidably turning into very thin thorns. Concerned with the thought that it might be a punishment from the Miracle, they locked her in as a novice inside a distant nunnery, famous for its strict cloistering, thus preventing the discovery of what would have, undoubtedly, been considered heresy."