The atlas that the most recent LoZ games seems to be derived from is the ALttP map. OoT's map is practically 1:1 to ALttP in overall geography. Really only the location of the forests in each game is the only major discrepancy. While TP's atlas mixes up the geography quite a bit, TP still...
Hyrule has no neighboring countries to speak of, so I think it's more likely that Hyrule's borders change based on Hylian infrastructure and migration and the general decline of the kingdom overall. This is evident in the extensive ruins all over Hyrule in TP, the general remoteness of the Ordon...
The borders of Hyrule in Ocarina and Twilight always struck me as indistinct. While Hyrule field is oddly bordered by stark cliffs to keep players within bounds, who knows what could conceivably lie beyond them? or the forest or the desert... I have yet to wonder where there is space for a...