The Great Wall of China is one of the wonders of the world. Spanning along the China-Mongolian border, it served to keep intruders out. Now it attracts thousands of tourists who want to walk the wall. On the steep paths along the ages old wall, the crowds can be very dangerous, one slip and down you go. The surrounding nature keeps on following the seasons, the sun is harsh at this point of China. Hiding behind the mountains, it highlights the guarding towers.