The Northern Territory's Tourist Commission says Aboriginal culture and heritage tours in Arnhem Land will be a major selling focus at an international trade show in Brisbane this month.

The commission's Andrew Clark says Arnhem Land has the potential to attract a large overseas market.

He says the region still faces several challenges, including preparing it for tourist demands.

"They have to have a product that is open consistent days and consistent hours and is, I guess, what we call 'export ready'," Mr Clark said.

"There're those challenges that are there locally and in other regions as well... but it is certainly a growing area."