Although you could travel the land. Perhaps not cross the Sahara but if you lived in the Roman world, you could quite easily take some years to walk off the edge of the map and just explore. There would of course be a good chance of death from illness, animal or person, but equally like today, you may also meet plenty of kind people who would let you stay and maybe even share their knowledge of the area and culture.
It was a lot later (1300s), but Ibn Battuta seems to have done just that. Guy leaves Morocco and just keeps going on and on, till he ends up in China. Though perhaps even more incredibly he actually does come all the way back. The historicity of his accounts is disputed and maybe only a part of it is true, but even if he only got as far as India, I still find it fascinating to imagine doing at that time.
Although you could travel the land. Perhaps not cross the Sahara but if you lived in the Roman world, you could quite easily take some years to walk off the edge of the map and just explore. There would of course be a good chance of death from illness, animal or person, but equally like today, you may also meet plenty of kind people who would let you stay and maybe even share their knowledge of the area and culture.
I like the idea that some people did. Just disappeared into the unknown on an adventure, found happiness and success there and never returned.
It was a lot later (1300s), but Ibn Battuta seems to have done just that. Guy leaves Morocco and just keeps going on and on, till he ends up in China. Though perhaps even more incredibly he actually does come all the way back. The historicity of his accounts is disputed and maybe only a part of it is true, but even if he only got as far as India, I still find it fascinating to imagine doing at that time.