The area is almost all rain forest and until recent decades was one of South America’s least populated and most inaccessible areas.

这个地区几乎全是热带雨林，直到最近几十年，还是南美洲人口最少和人迹罕至的的地区。

youdao

They live in a remote area, inaccessible except by car.

他们住在一处偏远地区，只能开车去。

《牛津词典》

In reality, they can be islands or any other area that is otherwise walled off and inaccessible.

实际上，他们也可以是岛屿或者其他围了墙而无法到达的区域。

youdao

They say the area where the fighting is raging is remote and inaccessible.

VOA: standard.2009.08.21

Its peaks once guarded Asturias from the forces of Abd al-Rahman and his descendants, powerful invaders from Damascus whose rule stopped short of this inaccessible and remote area.

BBC: A culinary pilgrimage along the Way of St James

But the local Udege people and the forest rangers say the area is inaccessible to both loggers and poachers.

BBC: Last stand for Russia's tigers

The proposals are said to locate the adventure park in an area of Tatton that has been "inaccessible to the public for many years".

BBC: Council planning to lend ?5m to Tatton Park adventure park