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JEDDAH: Scattered across ��������’s vast deserts and mountains lie more than 2,500 volcanic craters — relics of a fiery geological past that continues to intrigue scientists and thrill adventurous travellers today.

These ancient volcanoes have not erupted in centuries. Their silence, however, belies their significance.

“The Kingdom possesses one of the largest volcanic fields (locally known as Al-Harrat) in the world,” Turki Essam Al-Sehli, senior director of the Geohazard Center at the Saudi Geological Survey, told Arab News.

“These fields cover an area of approximately 90,000 square kilometers — around 4.6 percent of the Kingdom’s total area.”

The last known eruption was in 1256 AD, when lava from Al-Harrat Rahat flowed within 20 kilometers of Madinah. While dramatic in its time, such activity has long since ceased. “The Kingdom has experienced relative volcanic stability for centuries,” Al-Sehli said.

This dormancy, combined with the dramatic scenery of ancient lava fields, has opened the door to a growing trend: volcano tourism.

From stark black cones to craters that plunge deep into the Earth, ��������’s volcanic landscape offers some of the most breathtaking geological sights in the region.

Among the most striking is Al-Wahbah, a vast crater near Taif that is 250 meters deep and more than two kilometers across. In the Asir region, Jabal Farwa — the Kingdom’s tallest volcanic peak — rises more than 3,000 m above sea level.

Meanwhile, the Khaybar tract is home to Mount Al-Qadar, where lava once flowed for more than 50 km, and the otherworldly Mount Al-Abyad, known for its pale color and unusual formations.

“Fields like Rahat and Khaybar are characterized by hundreds of volcanic cones formed by mild explosive eruptions and vast lava flow areas reaching lava flow length over 50 km on some occasions, which grant them significant geological and scientific importance,” Al-Sehli said.

“Additionally, they are considered the largest in the Arab world and the Middle East.”

While some fields are still classified as “potentially active,” experts agree there is no cause for alarm.

“Some volcanic fields are categorized as potentially active due to the geophysical indicators of eruptible magma in the mid-crust, which means there is a possibility — even if slight — of future volcanic activity,” Al-Sehli said.

“Currently, there are no signs of imminent danger.”

Indeed, any future eruption, while highly unlikely in the short term, would be closely monitored. The Saudi Geological Survey operates a state-of-the-art seismic and volcanic surveillance network designed to detect even the slightest changes beneath the surface.

Should a large eruption take place, however, the environmental impact and the effect on the local climate could be significant.

“In the event of a major volcanic eruption, the emission of fine volcanic ash and gases such as sulfur dioxide, carbon dioxide and other greenhouse gases into the upper layers of the atmosphere could lead to temporary cooling of the local or regional climate, as well as generating acid rainfall,” Al-Sehli said.

With little risk posed by these sleeping giants and great natural beauty to explore and enjoy, �������� is increasingly investing in geotourism — promoting its volcanic fields not as hazards, but as heritage.

“There is growing interest in developing geological tourism in the Kingdom,” Al-Sehli said. “The ministry of tourism is collaborating with the Saudi Geological Survey to develop and preserve these geological sites.”

The Saudi Geological Survey’s role extends far beyond monitoring. It produces maps and reports, conducts scientific research, and works to raise public awareness through exhibitions and outreach programs.

It also helps identify and conserve key geological sites, ensuring that ��������’s volcanic past is protected for future generations.

From lava trails to towering cones, the Kingdom’s volcanic fields offer a window into Earth’s ancient forces — and a unique travel experience for those looking to explore a different side of ��������.

These volcanoes may be dormant, but their potential — for knowledge, for tourism, and for wonder — is anything but.
 

MAKKAH: As temperatures soared at the holy sites, �������� confirmed five cases of heat exhaustion among the more than one million pilgrims who have arrived to perform Hajj rituals.

All those affected received immediate medical attention and are currently in a stable condition, according to the ministry of health, which added that health teams were on high alert to respond swiftly to similar cases as part of the Kingdom’s commitment to safeguarding the health and safety of pilgrims.

The country’s National Center for Meteorology has forecast hot to extremely hot weather conditions at the holy sites during this year’s Hajj season.

According to the center, maximum temperatures are expected to range between 40°C and 47°C, while minimum temperatures will vary between 27°C and 32°C. Humidity levels are projected to fluctuate between 15 percent and 60 percent.

In a post on its X account, the ministry urged pilgrims to stay hydrated, avoid prolonged exposure to direct sunlight, and follow official health guidelines, such as using shaded walkways, wearing appropriate protective gear, and seeking help at the first signs of fatigue.

“If not treated promptly, heat exhaustion can escalate to heat stroke within 10-15 minutes — a life-threatening medical emergency,” the post stated.

The ministry also advised pilgrims who experience heat exhaustion symptoms to begin immediate cooling measures, such as washing their hands, faces and necks with cold water and moving to a cooler area, as well as drinking plenty of cold water to rehydrate.

In its post, the ministry identified headache, excessive sweating, nausea, dizziness, and severe thirst as key clinical symptoms of heat exhaustion.

Multilingual awareness campaigns have been launched, and field preparedness has been reinforced, particularly in response to seasonal heat risks.

The ministry had announced the health sector's readiness to receive pilgrims, revealing a 60 percent increase in bed capacity compared with last year.

Fahad Al-Jalajel, the minister of health, recently confirmed the deployment of over 50,000 medical and technical personnel to serve pilgrims and emphasized the stability of the health situation, with no reported outbreaks or epidemics, according to the Saudi Press Agency.

“Health efforts began early in pilgrims’ homelands by analyzing international health risks and issuing clear health requirements, including vaccinations against yellow fever, meningitis, polio, COVID-19, and influenza,” SPA reported, citing Al-Jalajel.

The minister underscored the role of the health certificate as the first line of defense during the Hajj season, noting that the Kingdom’s health system launched its services with the arrival of the first Makkah Route Initiative flight.

As part of the Kingdom’s comprehensive preparations, 14 land, air, and sea ports have been fully equipped, delivering more than 50,000 health services so far, including 140 surgical procedures, 65 cardiac catheterizations, and six open-heart surgeries, the minister said.

To combat heatstroke risks, Al-Jalajel announced a series of measures in coordination with the Royal Commission for Makkah City and Holy Sites. These include planting more than 10,000 trees, installing 400 additional water coolers and misting fans, and expanding shaded pedestrian pathways to protect pilgrims from extreme heat.

The ministry of health has also intensified awareness efforts through multilingual campaigns, stationing field teams, launching media programs, and organizing medical missions to ensure important health information reaches all pilgrims.

Al-Jalajel further revealed the establishment of a new 200-bed emergency hospital in Mina, developed in collaboration with Kidana Development Co.

In addition, three new field hospitals with more than 1,200 beds have been set up in partnership with the ministries of national guard, defense, and interior.

These were inaugurated “alongside 71 emergency points, 900 ambulances, 11 evacuation aircraft, and over 7,500 paramedics,” Al-Jalajel told SPA.

The minister urged pilgrims to follow health guidelines and affirmed that the Kingdom’s health system is operating at full capacity to ensure a safe and healthy Hajj season for all.