Art historians studying a painting by Pablo Picasso have uncovered the mysterious portrait of a woman, hidden beneath its surface.

X-ray and infrared imaging has revealed a long-hidden painting beneath "Portrait of Mateu Fernández de Soto," providing researchers with new insights into the artist's blue period

"Picasso often reused his canvases at this time because he did not have much money," the institute explained Historians recently made an unexpected discovery while examining one of Pablo Picasso’s paintings.

Under the painting of a Spanish sculptor is the outline of a woman, according to new infrared images. The artwork will be displayed in London.

Undiscovered painting by Picasso of a mystery woman, hidden for more than a century beneath a painting from his famous Blue Period revealed

A mystery woman, long concealed beneath a work from Picasso's early Blue Period, has been uncovered by researchers, shedding new light on the artist’s creative process. View on euronews