Mysterious treasure finding in Greece

These mysterious signs on some rocks in a hidden place in Greece (see images below) has been discovered by a passionate hobby detectorist. Finding these signs in the mountains of Greece was the inducement for him to search for a buried treasure in this specific area and the beginning of an exciting treasure hunt for gold, silver and other valuable items hidden somewhere under these rocks.

Treasure Hunting Sign 01 W0 I463: Misteriosos signos lleva a un tesoro de oro
Treasure Hunting Sign 02 W0 I464: Mapa del tesoro griego pintado en las rocas
Treasure Hunting Sign 03 W0 I465: Los signos muestran la dirección para detectar metales de oro y plata
Treasure Hunting Sign 04 W0 I466: El tesoro de oro parece estar muy cerca

After showing these pictures to some specialists he needed to find the exact place where to dig for the treasure. He decided to use the metal detecting instrument Rover C to visualize the underground in a 3d image and to see the exact position and depth of the expected targets.

Detector de metales Rover C detecta oro y monedas de plata
future-metal-detector-rover-w0-i457: El detector de metales Rover C, que encuentra la posición del tesoro.
gold-coins-metal-detected-in-greece-w0-i460: Der handgearbeitete Stein, der einem Schweinskopf ähnelt.

After scanning the complete area, he finally located a certain anomaly. He confirmed this anomaly by a few more control scans over the same place and finally succeeded and digged out a large item, similiar to a head of an animal.

Captura de pantalla de Visualizer 3D - escanear los datos en bruto
Okm Visualizer 3d Raw Data W0 I462: Captura de pantalla de Visualizer 3D con representación gráfica de los datos medidos de exploración.
Captura de pantalla de Visualizer 3D - datos escaneados procesados
Okm Visualizer 3d Interpolation W0 I461: Captura de pantalla de Visualizer 3D con valores procesados escanear.

Inside the animal head he found some gold and silver coins. The coins are maybe more than 2000 years old and some gold coins are showing Alexander the Great and one silver coin is showing Jesus Christ.

Parte frontal de los monedas de oro y de plata.
gold-coins-from-greece-front-w0-i459: Parte frontal de los monedas de oro y de plata, que se ha detectado con el detector de metales Rover C de OKM.
Parte de atrás de monedas detectado.
gold-coins-from-greece-back-w0-i458: Aquí puede ver la parte de atrás de las monedas detectados.