From ancient times, humans have sought to understand their surroundings by recording their travels, observing the skies, and studying natural phenomena such as rain, wind, and other transformations of the Earth’s surface. However, with the advent of Islam, a new era of exploration and discovery emerged in the field of geography. The Islamic tradition, particularly through the Quran and the sayings of the Prophet Muhammad ﷺ, encouraged intellectual inquiry into the natural world. This led to a renewed and systematic pursuit of knowledge in various sciences, including geography.

Geographical research prior to Islam had been significantly shaped by the contributions of the Greeks and Romans. However, by the fifth century AD, this intellectual tradition had begun to decline, leading to a stagnation in geographical advancements for nearly two centuries. It was within this context that Islam introduced a new intellectual energy, fostering rigorous scientific investigation and exploration. The Quran contains numerous references to the Earth’s structure, celestial movements, planetary orbits, and the dynamics of oceans, which inspired Muslim scholars to engage deeply with geographical inquiries. The works of these scholars not only revived geographical studies but also laid the foundation for major advancements in the field.

Among the early scholars who engaged with geographical knowledge was Imam Jalaluddin al-Suyuti (AD 1445–1505), who authored the famous work Al-Itqan fi Ulum al-Qur’an. In this treatise, he meticulously analyzed Quranic verses that reference the Earth and the skies, demonstrating how fundamental geographical knowledge is embedded within Islamic scripture. Such scholarship reinforced the belief that geography was not merely a study of land and water but also a divine science that connected human understanding with the vastness of creation.

Modern geography is broadly divided into two main categories: physical geography and anthropological geography. The former deals with tangible aspects such as the Earth’s surface, celestial bodies, and planetary movements, while the latter examines the interaction between humans and their environment, including historical and social dimensions. Islamic scientific inquiries, guided by Quranic insights and the sayings of the Prophet ﷺ, developed in both of these directions. As Muslim rule expanded, these investigations gained momentum, particularly in intellectual centers such as Baghdad. This period saw the emergence of prominent Muslim scholars whose contributions significantly shaped the field of geography.

One of the most distinguished figures in this regard was Muhammad ibn Sinan al-Battani (AD 858–929), an astronomer and mathematician renowned for his precise calculations of planetary positions and the Earth’s axial tilt. Al-Battani’s research on the movement of stars and planets was so advanced that the 18th-century French astronomer Lalande referred to him as the greatest astronomer the world had ever seen. His discoveries became instrumental in shaping later European astronomical studies. For instance, the 15th-century Italian scientist Regiomontanus relied on al-Battani’s calculations to create the Ephemerides, a celestial chart that Christopher Columbus later used for his navigation.

Another pivotal figure was Abul-Hasan al-Mas‘udi (AD 896–956), a 10th-century Egyptian geographer and historian. Al-Mas‘udi embarked on extensive travels and carefully studied Greek and Roman texts that discussed geographical concepts. His research included the documentation of planetary positions and land formations, as well as contributions to geomorphology, the study of Earth’s surface changes. He observed and recorded the phenomena of soil erosion and landscape transformations, providing detailed explanations of their causes. His analysis of the Indian monsoon was particularly significant, as he meticulously described its seasonal patterns and impact on agriculture. Al-Mas‘udi’s approach was deeply rooted in the idea that human societies are intrinsically linked to their natural environments, a perspective that would later influence ecological and environmental studies.

Perhaps the most remarkable scholar in this domain was Abu Rayhan al-Biruni (AD 973–1039), who authored twenty-seven books on geographical sciences. His work encompassed the study of Earth’s structure, cartography, and climatology. Notably, he spent forty years traveling and collecting data, which allowed him to make groundbreaking discoveries. One of his most famous conclusions was that light travels faster than sound—an insight far ahead of its time.

Al-Biruni’s Kitab al-Hind, written in AD 1030, provides a detailed account of India’s geography and cultural practices. In this work, he describes the rounded boulders found in the southern Himalayan region, explaining that their shape was the result of continuous water erosion. His most celebrated work, Al-Athar al-Baqiya, delves into ancient regions, their territorial boundaries, and geological formations. Due to his immense contributions, al-Biruni is often regarded as the father of geodesy, the science that studies the Earth’s size and shape. His research on fossils, conducted in various regions such as Arabia, Jurjan, and Khwarazm, led him to conclude that many present-day landmasses were once underwater. He also conducted extensive studies on flood patterns and was the first to explain the seasonal flooding of the Nile River, attributing it to heavy rainfall in the African highlands known as the “Mountains of the Moon.”

The historian George Sarton, in his analysis of al-Biruni’s work, described him as an extraordinary geographer and philosopher, noting that many modern geographical investigations are rooted in his discoveries.

In the realm of geomorphology—the study of Earth’s surface features—another key contributor was Ibn Sina (AD 980–1037). He proposed a theory that mountains form through two distinct processes: first, as a result of massive earthquakes that cause the land to rise; and second, through the accumulation of sediments by water and wind over time. His insights paved the way for a more advanced understanding of geological formations.

Further advancements in cartography and hydrology were made by Muhammad al-Idrisi (AD 1100–1165), who critically examined and corrected errors in Ptolemaic geography. He provided precise information about the origins of major rivers such as the Danube and the Niger and created a remarkably detailed world map, in which he accurately depicted the Caspian Sea and surrounding territories. His work established a more empirical approach to geographical knowledge.

Another significant figure was Abu al-Fida (AD 1271–1331), a medieval Muslim geographer who wrote The Concise History of Humanity, an influential geographical text. He systematically divided the world’s cities into twenty-eight sections, detailing their latitude, longitude, and climatic conditions. His book was translated into European languages in AD 1650, further demonstrating the lasting impact of Muslim geographical scholarship.

One of the most legendary travelers in history, Ibn Battuta (AD 1308–1368), made an unparalleled contribution to both geography and cultural history. He journeyed across North and West Africa, the Middle East, Central and South Asia, and China, covering a total distance of 75,000 kilometers—a record at the time. His famous travelogue, Rihla, is an invaluable source of information on medieval societies, documenting the natural environment, agricultural practices, and economic structures of the places he visited.

The contributions of these scholars revolutionized geographical studies, setting the stage for the systematic and empirical approaches that later shaped modern geography. Their meticulous observations, calculations, and mapping techniques laid the foundation for advancements in both the Islamic world and Europe. Today, the legacy of Muslim geographers remains an integral part of scientific knowledge, illustrating the transformative impact of Islamic scholarship on the study of the Earth.