Unfinished Giantess

Many come here for many reasons, some seek escape from their day to day lives, seeing that the inhabitants here adore any human who visits no matter what they do, and will help them ease any problem they can, it's an easy solution to many of life's issues, assuming you can get here at all. The path is treacherous and ever changing and it's much easier to get in than out. anyone who tries to learn how to be a guide will often find themselves trapped inside for a few weeks after every journey, even with years of practice. and it takes them days to get back in on top of that. So they usually bring large groups into the area knowing of this, and few trips are made yearly.

Despite that being the obvious way in it has many downsides, for one they require lots of registration before coming in, to help track those who don't come back. If you don't want everyone to know exactly where you went and why then this isn't an option for you. On top of that, because of the infrequency of their trips and the low number of those in the career, thus low competition, they jack up their prices to insane degrees. Lastly you'll be coming with a large group, most of which are just tourists who don't think very kindly about those who choose to stay, it can be embarrassing to be known as the one who didn't go back when the trip was over. Unfortunately for one reason or another you cannot, or will not be using one of these services. [might be explored in an update.]

Luckily for you the way into the valley is not actually dangerous beyond getting lost. Compasses don't work in the mountainous edges of the valley for some reason science has yet to explain (just like everything else in the valley to be fair.) but using the sun and stars still works fine. With the right education and preparation anyone can cross just by doing some mildly difficult hiking. Add taking regular rests and checking your direction during them each time and making sure to over pack food and water supplies and there's no risks.

This is what you did, reading up on forest navigation without technology or magnetism, packing enough supplies to last just over a week. You journey to the edge of the mountains. Many groups have tried guarding the mountains to not allow people to wander into them without being noticed, but the mountains just shift to make wanderers be perfectly in their blind spots. Or for fences to be mysteriously absent where a wanderer is trying to enter. Simply having the will to go and walking in a straight line can get you past any human made barriers of entry, even without the sheer amount of planning you've done.

three days go by with you camping in the mountain passes. You have plenty of time to change your mind, to turn back, or to think about why you're really here.

"I want to escape the burdens of life, or to be noticed for my artistic talents." [pet/muse route.]
"I'm just horny/perverted, nothing more complicated than that." [kinky route]
"I find this place fascinating scientifically." [SCIENCE! route]

pet/muse route: in this route you will either be a pet for one or more giantess, basically a trophy for her to enjoy when she's home, or to show off to her friends, or you wish to find someone who will be enraptured by your artistic talents, or just to care about you like a lover would. This is the best route to pick if you want a non-sexual ending, though plenty of sex is still here for those who like it. I'll try and make it clear which is which.
kinky route: in this route you explore being someone who has kinks that they either found hard to indulge in in the outside world, or you have kinks that directly relate to giantess that you wanted to indulge in beyond simply porn and fiction.
SCIENCE! route: this route is dumb, but you're basically someone wanting to test the limits of this valley's magic and see all of the known weirdness for yourself. Since most of the already known magic relates to heavily to sex you get into a lot of sex adventures. Might be merged with other routes later, I'm not sold, but the reasoning is funny to me.