i saw a question on r/askhistory about Pytheas, an ancient greek who sailed from northern Italy to various regions in northern Europe, British isles, and somewhere very far up north “six days sailing from the main British island” where the guy saw and recorded the effects of the arctic, ice covering the ocean, etc
looked it up on wikipedia and youtube and it’s fascinating

https://www.youtube.com/watch?v=d4NF1Qm3mK8

people speculate how far did the guy get, possibly one of the islands off the northern coast of Britain, or northern coast of Norway, or (unlikely) Iceland or even Greenland

imagining how you are out and about seeing things you’ve never heard about before and then they must have felt like if they don’t make it back home alive they can’t tell others of the crazy stuff they saw, makes me anxious and i kind of enjoy that lonely-anxious imagined feeling