In pictures: Egypt's hidden treasures

These blue stones in the Sinai desert are an artistic celebration of peace by Belgian artist Jean Verame.

Verame wanted to paint part of the Sinai blue to mark the peace treaty signed by Israel and Egypt in 1979.

He spent two years persuading the Egyptian authorities to let him pursue his artistic dream.

After getting approval from the then president, Anwar Sadat, the artist arrived in Sinai with ten tons of blue paint provided by the United Nations.