Under the scorching Gulf sun, the rhythmic hum of millions of barrels of crude oil rushing through underwater pipelines vibrates against the ancient coral rock.
The famous Iranian writer Jalal Al-e-Ahmad once stood here, gazing at the isolated shores, and dubbed the landmass the “orphan pearl of the Persian Gulf.”
Today, this 22-square-kilometer (8.5-square-mile) coral outcrop in Bushehr province is widely known among Iranians as the “Forbidden Island.”
Shrouded in intense secrecy and guarded by the elite Islamic Revolutionary Guard Corps (IRGC), it is a place where entry is strictly restricted to those with official security clearances.
Yet beyond the towering steel fences and military watchtowers lies a pristine landscape where millennia of diverse human history quietly coexist with the beating heart of Iran’s modern energy empire.
The nerve center of oil
Located 55 kilometers (34 miles) northwest of the port of Bushehr and 15 nautical miles (equivalent to about 28 kilometers) from the Iranian mainland, Kharg Island is the undisputed economic backbone of Iran.
The island processes 90 percent of the country’s total oil exports, handling approximately 950 million barrels each year.
Only 8 kilometers (5 miles) long and 4 to 5 kilometers (2.5 to 3 miles) wide, the deep surrounding waters provide a natural geographical advantage. This depth allows the colossal supertankers to dock safely and load crude oil destined mainly for Asian markets, with China being the main importer.
According to the Iranian Oil Ministry, the island’s facilities act as the vital nerve center of the sector. The terminal receives crude oil from three major offshore fields (Aboozar, Forouzan and Dorood) which is then transported through a complex network of subsea pipelines to onshore processing facilities before being stored or shipped to global markets.
Despite facing years of international sanctions that periodically stifled production, Iran has aggressively expanded the island’s infrastructure.
In May 2025, S&P Global Commodity Insights reported that Tehran added two million barrels to the terminal’s storage capacity by rehabilitating tanks 25 and 27, each with a capacity of one million barrels.
Historically, the loading capacity of these continually upgraded terminals has reached a staggering maximum of seven million barrels per day, although current domestic exports are around 1.6 million barrels per day, in addition to handling production for the domestic market.
Empires and exiles
The strategic maritime value of the island made it a coveted prize by conquerors long before the discovery of hydrocarbons. While some mistakenly link the name “Kharg” to the ancient inland city of Charax Spasinou (established by Alexander the Great near modern-day Basra at the confluence of the Tigris and Karkheh rivers), archaeological records confirm that they are not related.
Over the centuries, the island’s name has evolved in local dialects and on European maps, variously recorded as Kharg, Khark, Kharaj and Kharej. Its natural freshwater springs and privileged location made it an essential maritime crossing, facilitating the export of agricultural and mineral products.
During the European colonial era, the Portuguese first took control of Kharg along with other Gulf islands. In the mid-18th century, Dutch ambitions took root.
In 1752, the Dutch Baron Kniphausen secured an agreement with Mir Naser Al-Zaabi, the ruler of Bandar Rig, to establish a trading post. The following year, the Dutch East India Company built a heavily garrisoned fort to protect its interests.
However, this colonial foothold was short-lived; After years of rising tensions, Mir Muhanna, the governor of Bandar Rig, successfully attacked the fortress and definitively expelled the Dutch forces in January 1766.
In the 20th century, the island’s narrative took a dark turn when Reza Shah Pahlavi, who was Shah of Iran from 1925 to 1941, transformed it into a remote exile for political prisoners, leaving its wider potential completely untapped. The modern oil era really began to take shape after 1958.
Freeing itself from its grim penal past, Kharg was selected to become a huge crude oil export centre, with its new deep-water terminal officially commissioned and shipping its first major cargo in August 1960. When offshore fields were discovered in the 1960s, Kharg eclipsed the port of Abadan, attracting huge tankers to its deep-water berths.
Echoes of a diverse past
The modern industrial façade of the island hides a deep archaeological wealth. Evidence of human settlement dates back to the late 2nd millennium BC and spans the Elamite, Achaemenid and Sassanid eras.
Among its most revered sites is the Mir Mohammad Sanctuary, built at the end of the 7th century AD. H., which has two conical domes built with rock and mud.
Nearby is the Mir Aram Shrine, which houses a 12-metre (39 ft) stone with Islamic inscriptions and two torches believed to date from the Achaemenid period. Locals associate this site with Mir Aram, a descendant of the Quranic and biblical prophet Noah.
The island is a testimony of religious and cultural plurality. An ancient heritage cemetery contains a remarkable mosaic of religions, including:
- Zoroastrian cemeteries;
- Christian tombs;
- Tombs from the Sassanian era
Other historical sites dotting the island include the remains of the 1747 Dutch Fort, the Dutch Garden, the Kharg Orchard, an old railway line, Islamic cemeteries and a deeply significant Achaemenid inscription. This coral rock engraving, measuring 85 by 116 cm (33 by 46 in), is celebrated as one of the oldest archaeological records to explicitly mention the “Persian Gulf”.
Kharg Island bears the severe scars of its geopolitical prominence, having endured relentless and devastating bombing during the Iran-Iraq war in the 1980s before being painstakingly rebuilt by Iranian authorities.
Today, as geopolitical tensions repeatedly threaten the region’s waterways, the island remains heavily militarized, keeping tourists at bay and inadvertently preserving its pristine ecological character.
As supertankers glide silently into the deep waters of the Gulf, carrying the economic lifeline of a heavily sanctioned nation, ancient Zoroastrian and Christian tombs watch silently from the coral shores, a haunting reminder that while empires and energy wars come and go, the “orphan pearl” remains forever tied to the turbulent tides of history.
