This is the nailed skull of an Iberian warrior preserved in the National Archaeological Museum.

Kane Khanh | Archeaology
July 22, 2023
According to researchers, ancient Iberians were some of the peoples who prepared and publicly displayed the severed heads of their defeated enemies as trophies, sometimes alongside seized weapons.
Có thể là hình ảnh về xương
They even used to hammer large nails through the severed heads (some 40 such heads were found in the Iberian settlement of Ullastret, for instance).
Một hộp sọ bị đinh sắt đâm xuyên theo nghi lễ chặt đầu của người Iberia. Bảo tàng Khảo cổ học Catalonia, Ullastret.
This ritual custom and its staging reaffirmed leaders’ power.