The path around Mount Kailash is long. Some pilgrims believe that the entire walk around Kailash should be made in a single day, which is not considered an easy task. A person in good shape walking fast would take perhaps 15 hours to complete the entire trek. Some of the devout do accomplish this feat, little daunted by the uneven terrain, altitude sickness and harsh conditions faced in the process. Indeed, other pilgrims venture a much more demanding regimen, performing body-length prostrations over the entire length of the circumambulation: The pilgrim bends down, kneels, prostrates full-length, makes a mark with his fingers, rises to his knees, prays, and then crawls forward on hands and knees to the mark made by his/her fingers before repeating the process. It requires at least four weeks of physical endurance to perform the circumambulation while following this regimen. The mountain is located in a particularly remote and inhospitable area of the Tibetan Himalayas. A few modern amenities, such as benches, resting places, and refreshment kiosks, exist to aid the pilgrims in their devotion. According to all religions that revere the mountain, setting foot on its slopes is a dire sin. It is a popular belief that the stairways on Mount Kailash lead to heaven.