As long as you have steady winds, you should be able to fly a kite. And if you can fly a kite, then you can fly:
Man-carrying kites are believed to have been used extensively in ancient China, for both civil and military purposes and sometimes enforced as a punishment.
The (636) Book of Sui records that the tyrant Gao Yang, Emperor Wenxuan of Northern Qi (r. 550-559), executed prisoners by ordering them to 'fly' using bamboo mats. For his Buddhist initiation ritual at the capital Ye, the emperor parodied the Buddhist ceremonial fangsheng æ”¾ç”Ÿ "releasing caged animals (usually birds and fish)". The (1044) Zizhi Tongjian records that in 559, all the condemned kite test pilots died except for Eastern Wei prince Yuan Huangtou.
Gao Yang made Yuan Huangtou [Yuan Huang-Thou] and other prisoners take off from the Tower of the Phoenix attached to paper owls. Yuan Huangtou was the only one who succeeded in flying as far as the Purple Way, and there he came to earth.
The Purple Way (ç´«é™Œ) road was 2.5 kilometres from the approximately 33-metre Golden Phoenix Tower (é‡‘å‡°å°). These early manned kite flights presumably "required manhandling on the ground with considerable skill, and with the intention of keeping the kites flying as long and as far as possible."
Stories of man-carrying kites also occur in Japan, following the introduction of the kite from China around the seventh century AD. In one such story the Japanese thief Ishikawa Goemon (1558"“1594) is said to have used a man-lifting kite to allow him to steal the golden scales from a pair of ornamental fish images which were mounted on the top of Nagoya Castle. His men manoeuvered him into the air on a trapeze attached to the tail of a giant kite. He flew to the rooftop where he stole the scales, and was then lowered and escaped. It is said that at one time there was a law in Japan against the use of man-carrying kites.
In 1282, the European explorer Marco Polo described the Chinese techniques then current and commented on the hazards and cruelty involved. To foretell whether a ship should sail, a man would be strapped to a kite having a rectangular grid framework and the subsequent flight pattern used to divine the outlook.
I have a personal hypothesis that the expression "high as a kite" came to be due to people smoking hashish (pot resin) and then flying with these kites, because that would give you one dope trip. Just like Mr. Ronald Amudsen in the picture below (trying the technology to see if it would help exploring the arctic).
But alas, I have no evidence to support this.
Anyway, having both flown a kite and being high as a kite (though not on a kite) in a very plain place, I can tell you that by this way you could lift a person. That person could go arbitrarily high, depending on how much hemp you got. The hemp is for the rope that will hold the kite, among other things. By the way, if your setting ever becomes a movie, I suggest including Mystic Traveler by Dave Mason as the theme for the flying scenes.
Go high enough, and besides the view, you might have enough clearing for a base jump. Being able to build a proper parachute, or even trying a DaVincian one, is a topic for another post.