Old-growth forests

The Ardennes, also known as the Ardennes Forest or Forest of Ardennes, is a region of extensive forests, rough terrain, rolling hills and ridges primarily in Belgium and Luxembourg, extending into Germany and France.

old forest in Poland and Belarus

national park in the Democratic Republic of the Congo

Jiuzhaigou (; ) is a nature reserve and national park located in the north of Sichuan Province in southwestern China. A long valley running north to south, Jiuzhaigou was inscribed by UNESCO as a World Heritage Site in 1992 and a World Biosphere Reserve in 1997. It belongs to the category V (Protected Landscape) in the IUCN system of protected area categorization.

forest that has developed over a long period of time without disturbance

transnational UNESCO world heritage site

U.S. national park in Tennessee and North Carolina

protected area of Russia

generic forest in the tropics

national park in China

national park of the United States

forest in Lebanon

national park in Malaysia

national park located in South Carolina

Perućica () is one of the last remaining primeval forests in Europe. It is located in Bosnia and Herzegovina, near the border with Montenegro. It is part of the Sutjeska National Park.

mountain range in Europe

national park of Romania, Biosphere reserve in Romania

collaborative group of parks in California

protected area and national park in Montenegro

American mountain range along North Carolina/Tennessee border

culturally and environmentally protected reserve in Haida Gwaii, British Columbia

biosphere reserve in Zakarpattia Oblast, Ukraine

national park

national park in Saarijärvi, Finland

Central European forest of the Roman empire

National Monument in the United States

forest in North Rhine-Westphalia, Germany

protected area

term used in the United Kingdom

Belum-Temengor is the largest continuous forest complex in Peninsular Malaysia. Specifically, it is located in the Malaysian state of Perak (Hulu Perak) and crosses into Southern Thailand. Belum-Temenggor is divided into two sections. Belum is located up north, right by the Malaysia-Thailand border, while Temenggor is south of Belum. The Royal Belum State Park is entirely contained within the forest complex. Bang Lang National Park is on the Thailand side of the border.

national park in the Democratic Republic of the Congo

forest of Uganda

Primeval forest in Nara, Japan

mountain on New Guinea, in Indonesia

national forest in North Carolina

ecoregion in the British Isles

temperate rainforest on the Pacific coast of British Columbia, Canada

forest in Podlaskie Voivodeship, Poland

park in British Columbia, Canada

mountain range in Michigan, United States

state park in California, USA

mountain in Massachusetts, United States

ancient and medieval forest located on the current territories of Belgium and northern France

state park in California, USA

mountain in Piscataquis County, Maine, United States

state park in Humboldt County, California, United States

forest that once covered parts of Romania

state park in Del Norte County, California, USA

sound in British Columbia, Canada

lake in Pierce County, Washington state, United States of America

National forest in North Carolina, US

state natural reserve in California

national forest in Wisconsin, United States

United States national forest in Oregon

state park in San Mateo County, California, USA

state park in California, United States

state park in Santa Cruz County, California, United States

federally protected wilderness area in northwest Washington state