Plizio Visual Lab

Cuyuni-Mazaruni Highlands

Plizio editorial teamUpdated: Jun 2026Data Sources

Relief

Weather…

The Cuyuni-Mazaruni Highlands in western Guyana are part of the ancient Guiana Shield, one of the oldest geological formations on Earth. This rugged region is characterized by the Pakaraima Mountains and distinctive table-top mountains, known as tepuis, which rise from the dense rainforest. The plateau reaches considerable elevations and forms the watershed for the mighty Cuyuni and Mazaruni rivers. Due to its isolated location, unique ecosystems have developed here, hosting many endemic plant and animal species. Historically, the region gained significance through the discovery of rich gold and diamond deposits, leading to the establishment of remote mining settlements. The climate is cooler and more humid than in the lowlands, resulting in the formation of cloud forests at higher elevations. The scenic beauty with numerous waterfalls, including the famous Mount Roraima at the triple border with Brazil and Venezuela, makes the highlands a target for scientific expeditions. Despite its difficult accessibility, protecting this fragile mountain ecosystem in the face of mining activities is an urgent task.

Location: Guyana
Nearby: Kamrang (43 km)

Best time to visit & climate

The most pleasant time to visit is Jan–Mar.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg °C	23	23	24	24	23	22	22	23	23	24	24	23
Rain mm	84	59	48	117	251	295	239	202	110	82	100	106

📋 Practical info

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Getting there

This extremely remote region is accessible primarily by chartered bush flights to small airstrips, or long river journeys. Organized expeditions are practically mandatory for entry.

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Best season

The dry seasons, roughly February to April and August to November, offer more predictable travel conditions. Heavy rains can cause rivers to swell dramatically and ground flights.

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Terrain & paths

The landscape features sheer-sided tepuis, deep river valleys, dense rainforests, and rushing waterfalls. Trails are virtually non-existent, requiring strenuous jungle trekking.

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What to bring

Expedition-level equipment is required, including heavy-duty jungle boots, machetes, and hammocks. Complete self-sufficiency in food, medical supplies, and water purification is vital.

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Parking

There is no conventional vehicle access to this wilderness area. Any land transport is typically arranged from Georgetown before transitioning to light aircraft or riverboats.

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Safety

Extreme isolation means emergency evacuation is incredibly difficult and time-consuming. Tropical diseases, harsh terrain, and dangerous wildlife demand professional expedition leadership.

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Time needed

Exploring this vast region requires significant time commitment, typically expeditions lasting one to three weeks. Logistics and travel alone consume a large portion of the itinerary.