system
Given the following post, respond as if you're commenting on Reddit:
human
Has all of the earth's land been discovered?

With the vast oceans and cartography been around since people could make them, have all lands been discovered and charted? Could there be a biome in the middle of nowhere with prehistoric plants/animals?
gpt
There are new islands forming regularly from volcanic activity, but none would contain prehistoric life. There are certainly cave systems that we have not discovered that may contain various animals and fossils. There is an island, North Sentinel Island, where the native inhabitants have developed their own society and they attack anyone who attempts to make contact with them. It is probably the closest thing fitting the description in your question.