LONDON: An Arabian desert expedition aims to retrace the steps of a famous journey by a British explorer who served as an adviser to the first ruler of Saudi Arabia. The planned 1,300-km Heart of Arabia coast-to-coast trek across the peninsula was launched by Anne, Princess Royal of the UK, on Wednesday. It was her first public engagement since the death this month of her mother, Queen Elizabeth II. The expedition will honor the undertaking and achievement of adventurer, Arabist and intelligence officer Harry St. John Philby, who traveled from the Gulf coast village of Al-Uqair to Jeddah, on the Red Sea coast, on a mission in support of Ibn Saud, the Kingdom’s first ruler. The Heart of Arabia journey will set off in November, a century after Philby’s crossing. It is led by veteran British explorer Mark Evans and the team, which will travel by foot and on camels, includes Philby’s Saudi granddaughter, Reem. After reaching Riyadh they will travel west on the final stage to Jeddah, which is likely to present the greatest challenge because of harsh winds and rough terrain, including sand and loose rock. Philby was sent to Arabia during the First World War to assist T. E. Lawrence as part of the British efforts to foment an Arab uprising against the Ottoman Empire, which at the time stretched across the Red Sea side of the Arabian Peninsula all the way to Yemen. His journey led to groundbreaking cartographic and natural discoveries, and resulted in significant changes to the political landscape of the Middle East. Philby, who would later reside in Riyadh, developed a close relationship with Ibn Saud, who at the time was a significant tribal leader. Philby adopted local dress and customs, and converted to Islam, which helped him play a key role in the events that led to the Arab Revolt and the creation of Saudi Arabia. Evans said of Philby: “He is considered by many as one of the greatest early explorers of Arabia. He not only set out across uncharted land but took time to record everything he saw.” Reem Philby said that she is drawn to “the stillness and constant movement of the desert at the same time.” She added: “Just observing how nature controls everything in harmony and how we are the ones that have to adapt, makes one very humble.” Princess Anne said: “How did people live in the environment that he crossed? What was different about it? And actually, what’s perhaps even more important in modern terms, is to understand how much has changed compared to what existed before.” The Arabian landscape has long attracted interested intrepid Britons, including explorer and writer Wilfred Thesiger, who commended the tribes he encountered during his crossing of the Kingdom’s Empty Quarter for their loyalty and generosity.