Ever wondered the reason for the coolness under your feet at the Grand Mosque and around holy Kaaba? What is that keeps the floor cool even during soaring temperatures? The reason for this are not any cool water pipes beneath but the kind of marble used. The office of the General Presidency for the Affairs of the Two Holy Mosques told Al Arabiya that the main reason was the type of marble that makes the flooring. A rare kind of marble, Thassos is imported from Greece. The stone has the uniqueness of reflecting the sun's rays and in turn the heat during the Day. This keeps the floor cool, while easing the pilgrimage for the devotees.