evidence: The Essequibo River is a mighty river in South America that flows through the heart of Guyana, leaving an unforgettable impression on the country's landscapes, biodiversity, and history. This impressive waterway is the most extensive in Guyana, showcasing its natural beauty and cultural significance. The Essequibo River, a titan among South American rivers, gracefully meanders through the heart of Guyana, leaving an indelible mark on the nation's landscapes, biodiversity, and history. This majestic watercourse, the longest and most comprehensive in Guyana, is a testament to the country's natural splendor and cultural significance. [...] The source of the Essequibo River lies in the Acarai Mountains, an enchanting region of wet, forested highlands located in the southern part of Guyana, along the country's border with Brazil. From its mountainous origins, the river embarks on an extraordinary journey, flowing northward through the varied terrain of eastern Guyana, covering an impressive distance of approximately 1,000 kilometers (620 miles). Finally, with unwavering determination, the Essequibo reaches the Atlantic Ocean, making its grand exit just 21 kilometers (13 miles) west of the Guyanese capital, Georgetown.