If you have the option to go to tippet island, there is no interaction in the game that tells you to go there before, so you don't know what it is.
#Tippet Island is available but no clue before
digital sierra
left tulip
Neither in original LBA we can assume that Twinsen studied geography at shchool and he nows already about that island XD
rancid olive
If you go to the rebellion island, some people tell you to go there.
left tulip
If you go to the rebellion island, some people tell you to go there.
Until I know only after revisiting rebel island... before that they all speak about the mission
digital sierra
Neither in original LBA we can assume that Twinsen studied geography at shchool ...
No. Because he didn't know that this island existed beforehand, because no one was in this hemisphere before.
left tulip
That's no true
people were in that hemisphere before
is just Funfrock who is evacuating it that's why he created the mutants to eliminate the remaining population
vivid rock
Little hint in your adventure log
Tippett is very close to hamalayi, is the only destination with the hydroglider because he is not very powerfull
So we can imagine tippe is visible from hamalayi