Cardamom Mountains
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| Cardamom Mountains | |
|---|---|
| ជួរភ្នំក្រវាញ (Chuŏr Phnum Krâvanh) | |
| Geography | |
| Type | Mountain range |
| Country | Cambodia |
| Provinces | Koh Kong |
| Coordinates | 11.500000, 103.500000 |
| Borders | Thailand (northwest), Gulf of Thailand (southwest) |
| Elevation | 1,813 m (Phnom Aural) |
| Length | ~160 km |
| Area | ~20,000 km² |
| Rock Type | Granitic plutons, metamorphic basement |
| Age | Late Cretaceous (~75–98 Ma) |
| Growing Region | Southern Cambodia |
| Growing Area | Cardamom Mountains |
The Cardamom Mountains (Khmer: ជួរភ្នំក្រវាញ, Chuŏr Phnum Krâvanh; Thai: ทิวเขาบรรทัด, Thio Khao Banthat), also known as the Krâvanh Mountains, are a major mountain range in southwestern Cambodia extending into eastern Thailand. The range runs along a northwest-southeast axis from Chanthaburi Province in Thailand through Koh Kong, Pursat and Kampong Speu provinces in Cambodia, where it connects to the Elephant Mountains (Dâmrei Mountains) to the southeast.[1] The highest point, Phnom Aural (1,813 m), is Cambodia's tallest peak.[2]
The Cardamom Mountains are significant to landrace cannabis documentation for three reasons: as the epicentre of large-scale commercial cannabis cultivation during the 1990s and early 2000s, as a corridor where dispersed deep-forest cultivation persists under eradication pressure, and as one of the largest remaining tracts of primary tropical forest in mainland Southeast Asia, whose inaccessibility has historically sheltered both cannabis cultivation and other illicit extraction economies including safrole oil production.[3][4]
Geography
The Cardamom Mountains occupy the western quarter of Cambodia, running roughly northwest to southeast from the Thai border to the Central Plains. The range lies principally within Koh Kong, Pursat and Kampong Speu provinces, with extensions into adjacent areas. The massif falls broadly between 10°50' N to 12°45' N latitude and 102°30' E to 104° E longitude.[2]
The topography consists of steep escarpments, deeply incised valleys and pronounced ridges. Elevations rise abruptly from near sea level along the southwestern coastal plain to over 1,500 m, with several peaks exceeding 1,350 m. Phnom Aural (1,813 m) in the eastern part of the range is the highest point in Cambodia. Other significant summits include Phnom Samkos (1,717 m) in the northwest and Tumbol Hill (1,563 m) near the Thai border.[1][2]
To the southwest, the range borders the Gulf of Thailand through a narrow coastal plain. To the northwest, it meets the international boundary with Thailand. To the east and north, it transitions into the lowland plains of the Tonle Sap basin. The Elephant Mountains extend as a southeastern continuation, rising to 500–1,000 m.[1]
The mountains form a major watershed: rivers drain southwestward toward the Gulf of Thailand rather than into the Mekong system. Dense tropical rain forest prevails on the windward western slopes, which receive 3,000–5,000 mm of rainfall annually, while the eastern slopes in the rain shadow receive only 1,000–1,500 mm.[1]
Geology
The Cardamom Mountains are composed primarily of granitic plutons and associated metamorphic rocks formed during the Late Cretaceous period, approximately 75 to 98 million years ago, as part of broader Indochinese magmatism and tectonism.[2] These igneous and metamorphic foundations create impermeable bedrock that fosters steep slopes prone to erosion and produces the range's dramatic relief. Overlying sandstone and alluvial deposits occur in places.[2]
The same geological processes that created the Cardamom Mountains are responsible for the Bayong Kor pluton (~86 Ma) in Takeo province, where gem-bearing miarolitic pegmatites have been documented.[5]
Ecology
The Cardamom Mountains are the core of the Cardamom Mountains rain forests ecoregion, one of the largest remaining areas of mostly intact tropical moist broadleaf forest in mainland Southeast Asia. The range supports several distinct vegetation zones: lowland evergreen forest, montane cloud forest above 700 m, and dwarf conifer forests (Dacrydium elatum) on the southern slopes of the Elephant Mountains.[2]
The range is thought to shelter at least 62 globally threatened animal species and 17 globally threatened trees, including the largest population of Asian elephant in Cambodia. Other species include Indochinese tiger, clouded leopard, dhole, gaur and banteng.[2] Pearic-speaking indigenous communities historically occupied the foothills and retain distinctive languages and ecological knowledge.[2]
The isolation that preserved these ecosystems was partially compromised in 2002 when a transborder highway to Thailand was completed south of the Cardamoms along the coast, fragmenting habitats for large mammals and opening areas to slash-and-burn agriculture and poaching.[2]
Historical significance
The Cardamom Mountains hold historic sites dating from the 15th to 17th centuries, including jar burials containing ceramic jars and rough-hewn log coffins set on remote rock ledges. A rock art cave site known as Kanam depicts elephants, elephant riders, deer and wild cattle in red ochre paint.[2]
The range's inaccessibility made it one of the last strongholds of the Khmer Rouge after Vietnamese forces toppled the regime in 1979. The border with Thailand served as a conduit for foreign support and a sanctuary for fleeing fighters and refugees. This period of conflict displaced populations and disrupted traditional land use patterns across the range.[2]
Cannabis cultivation
Main article: Southern Cambodia
The Koh Kong era (1980s–2000s)
The Cardamom Mountains were the epicentre of commercial cannabis production in Cambodia during the 1990s and early 2000s. An academic Vulnerability and Capacity Assessment documented cannabis at coastal communities in Koh Kong province: at Koh Sralao, mountain forest was cleared from 1980 to 1990 specifically to plant Cannabis indica, driven by conflict refugees. Cultivation ended in 1991 when the Ministry of Environment declared the area protected.[6]
By the mid-1990s, Thai-financed commercial cultivation had transformed the Cardamom corridor. A 2002 Reuters report described Koh Kong as Cambodia's "Wild West" and a production zone for high-quality marijuana grown in large quantities. Drug lords provided farmers with tools, seeds and fertiliser.[7] The 2003 INCSR identified the Cardamom provinces as primary producing areas, with national output estimated at 700–1,000 tons annually.[3]
The same inaccessibility that sheltered cannabis cultivation also supported large-scale illicit safrole oil extraction from Cinnamomum parthenoxylon trees during this period, suggesting a shared economic logic driven by remoteness from law enforcement.[4]
Dispersed cultivation (2000s–present)
As road infrastructure and enforcement pressure reduced Koh Kong's viability as a production centre, the main locus of cultivation shifted southeast to Kirivong in Takeo province. However, dispersed cannabis cultivation continues within the Cardamom corridor. In 2015, Pursat police destroyed thousands of marijuana plants in deep-forest plots concealed among sesame crops, with the plants traced to seed stock sourced from Kandal province.[8]
The pattern of cultivation across the Cardamom range follows the general characteristics documented elsewhere in Southern Cambodia: remote mountain plots, intercropping for concealment, and rapid replanting after eradication.
Conservation
Large portions of the Cardamom Mountains have been incorporated into government-declared protected areas and wildlife sanctuaries, managed under coordination between Cambodia's Ministry of Environment, provincial authorities and international conservation organisations. Key protected areas include the Cardamom Mountains Wildlife Sanctuary and the Central Cardamom Protected Forest.[2]
From a landrace cannabis conservation perspective, the Cardamom corridor represents a historically significant but now largely suppressed growing area. The cultivars grown in the Koh Kong corridor during the 1980s and 1990s, classified as Cannabis indica in the only academic botanical identification,[6] were never systematically collected, characterised or preserved before enforcement effectively eliminated large-scale cultivation. Whether isolated deep-forest cultivation maintains genetic continuity with the earlier Koh Kong populations is unknown.
See Also
References
- ↑ 1.0 1.1 1.2 1.3 Encyclopaedia Britannica. "Krâvanh Mountains." [1]
- ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 Wikipedia. "Cardamom Mountains." [2]
- ↑ 3.0 3.1 US Department of State. "International Narcotics Control Strategy Report 2003: Cambodia." Bureau for International Narcotics and Law Enforcement Affairs, March 2003. [3]
- ↑ 4.0 4.1 US Embassy Phnom Penh. Cable 07PHNOMPENH1376, "2008 INCSR Submission: Cambodia." 2 November 2007. [4]
- ↑ Piilonen, Paula C., et al. "The Mineralogy of the Gem-Bearing Miarolitic Pegmatites And Hydrothermal Veins At Phnom Bayong, Kirivong, Takeo Province, Cambodia." Rocks & Minerals, 98 (4), 2023, pp. 310–327.
- ↑ 6.0 6.1 "Vulnerability and Capacity Assessment of Koh Kong and Kampot Provinces, Cambodia." [5]
- ↑ "Cambodia's Wild West." Reuters, 18 May 2002. [6]
- ↑ Khouth Sophak Chakrya. "Thousands of marijuana plants seized, burned by Pursat police." Phnom Penh Post, 6 May 2015. [7]