This is the terrifying moment a skydiver was left plummeting 12,500ft to the ground after he was knocked out in a skydiving accident. <br /> <br />James Lee, 25 was taking part in a jump in Wiltshire when just seconds after leaping from the plane he was hit on the back of the head by another skydiver. <br /> <br />The blow knocked him out and sent him hurtling towards the ground uncontrollably. <br /> <br />Luckily two other skydivers noticed something was wrong and chased after their unconscious colleague. <br /> <br />After realising he was unresponsive the two men managed to roll James into a more stable position and deploy his parachute for a safe landing. <br /> <br />It wasn't until James was under the canopy that he began to regain consciousness, he landed safely on the ground with no memory of the drama that had unfolded seconds earlier. <br /> <br />The mid-air drama was captured by a camera on James' helmet.
