Vilsa Nara I still haven't figured how to shoot video of my playthrough, so you'll have to make do with a couple of pics
(I'm playing version 12.2 on a Mac from your itch.io site using Firefox)
In the prologue, after Jenna reports to HQ that she can see a bandit's lair complete with a cave entrance, she is expected to follow the path to the cave. If, instead, she walks through the woods, straight towards the cave, she can disappear off the screen totally by going west all the way till she's blocked, then north
EDIT: my screenshots are too large, apparently. Lemme see if I can circumvent that