The requirement for a portable field piece in mountainous jungle led to the use of the 3.7 inch Mountain Howitzer in the New Guinea campaign.

They had a concept of establishing "base areas" (chien khu) or "safe areas" (an toan khu), often mountainous jungle.

The 3,000 square kilometres of mountainous jungle appear to have been untouched by humans until the 2006 scientific expedition.

The area in which the Cessna is believed to have gone down is uninhabited, mountainous jungle.

Zigas, who accompanied Gajdusek, found this odyssey "the most trying experience in my seven years in the mountainous jungles."

Formosa is a tropical island, very hot and humid in the summer, with mountainous jungle on the east and plains in the west.

Chase had to move his brigade across mountainous, roadless, uncharted jungle in frequently appalling wet weather.

The task of dragging down the trees (with very strong ropes on both ends) from the mountainous jungle on narrow access was indeed a hazardous challenge to the men.

The most dominant Indian civilization to rise out of the mountainous jungles of South America were the Inca.

For the Vietnamese farmers, it has always been there-the only trafficable route out of this mountainous jungle.