A detailed, serene, sepia-toned illustration of an ancient oak tree with an origami crane on a branch, a medieval castle in a misty forest under a crescent moon, and a stone wall in the foreground. Text 'EX LIBRIS' below.

Ex Libris design — A realistic, ancient holm oak tree (encina gorrinera) with rugged bark and visible roots intertwined with earth, moss, wildflowers, fallen leaves, and scattered twigs. A delicately folded origami crane is harmoniously perched on a low branch, with a faint shadow suggesting quiet movement. In the foreground, a worn, moss-covered stone wall with irregular, eroded stones, partially overtaken by roots, and engraved with faint medieval markings. The background shows a tranquil medieval forest landscape with low mist, scattered trees, and a narrow, irregular stone path. Silhouetted in the distance is a small castle or watchtower inspired by medieval villages from Segovia, such as Pedraza, Sepúlveda, Fuentidueña, Turégano, Maderuelo, Cuéllar, or Coca. The architecture is rustic and integrated into the landscape. A crescent moon hangs softly above, casting a warm, diffused light that bathes the scene in quiet serenity. Near the wall, an extinguished campfire suggests human presence without depicting figures. The overall composition evokes calm, wisdom, patience, and refuge. See more