[9] Nestled between the Limbang and Trusan Rivers on all sides, Bukit Pagon (1,850 m) dominates the eastern region of Brunei.

The region is inaccessible, but it has substantial gravel reserves that have been actively mined to satisfy rising building demand.

[11] This then gives place to montane vegetation with stunted, gnarled trees covered in mosses in the upper Temburong region as the ground climbs over 1,500 metres (4,900 ft).

[12] It is suggested that a few tiny islands covered in mangroves be designated as nature sanctuaries because of their ecological significance and rich biodiversity.

Even if there may be restricted development for social or commercial reasons, it is recommended that any disturbance adhere to comprehensive environmental impact evaluations.

[13] The Temburong River is an integral element of the Brunei estuary, which is a vital nursery and feeding ground for marine life, especially penaeid shrimps.

The estuary, which is made up of deep channels and mudbanks rich in organic matter, receives a lot of freshwater from rivers such as Temburong and Trusan, which causes its salinity levels to fluctuate.

Eventually, the North Borneo authorities who wanted Brunei to stay as a buffer state between itself and Sarawak helped them with this.

[15] In 1919, the government funded a public works program to construct bridle paths, connecting rubber estates in Temburong with those near the capital at Gadong and Berakas.

In addition to studies for additional road and bridge links between Brunei–Muara and Temburong, the plan calls for infrastructure upgrades in the Temburong District, including correcting earth slips, modernising high-density roadways, replacing wooden bridges, and rehabilitating important highways.

The drive from Bandar Seri Begawan was reduced by 75%, from two or more hours (via Sarawak, requiring four international passport checks) to approximately thirty minutes.

The "Beras Laila" rice type, which is high in protein, low in carbs, and able to be harvested twice a year, strengthened food security and proved to be a success for the paddy plantation industry.

With 382.4 hectares and 264.52 metric tons of rice produced annually, Temburong was the second-largest paddy plantation area in Brunei by 2008.

[34] Despite extensive clearing, the district's mangrove forests—especially in Selirong and Labu—still include sizable tracts of unbroken old-growth forest.

[35] A prawn farm was established on a 1,000 acre site at Biang on the Temburong River as part of efforts to boost fisheries development; however, it eventually failed commercially owing to issues with water quality control, management, and labor shortages.

Large-scale activities have been hampered by the absence of local knowledge, even with government assistance in the form of infrastructure, hatcheries, and fishing cooperatives.

Temburong District, a top producer of high-quality stones, manufactures interlocking paving blocks in addition to providing a steady and enough supply of aggregates for sale and usage in road building.

[42] Taman Aie Tenub, named after the creek that runs through it (meaning "cold water park" in a combination of Malay, Iban, and Murut), is a perfect place for picnics in verdant surroundings.

[43] With a canopy walkway rising to a height of 250 meters, Ulu Temburong National Park, which covers an area of more than 500 square kilometers, offers panoramic view of one of the oldest rainforests.

Situated in the eastern region of Temburong, Bukit Patoi Recreational Park boasts a 300-meter wooden walk that ascends to a 310-meter hill that offers views across the Lawas Basin.

13 kilometers from Bangar Town, Batang Duri Recreational Park has a mini-zoo with native animals and river wading.

[44] In 2009, Temburong District was recognised for the first Excellent Village medal, where the Village Consultative Council (MPK) of Belais and Buda-Buda won a bronze medal for their efforts related to fishing, heritage and recreational parks, farming of chicken, mushroom cultivation, and food production.