First Expedition Giles did not attempt an organised expedition until 22 August 1872, when he left
Chambers Pillar with two other men and traversed much uncharted country to the north-west and west, along the
Finke River, through the Krichauff Range and then to Mount Udor. He then turned south, encountering a freshwater spring surrounded by caves filled with
Aboriginal rock art. Giles denigrated the paintings, stating they were childish manifestations created by "reptile-eating Troglodytes". A member of his group, Samuel Carmichael, then proceeded to vandalise the rock drawings "with a few choice specimens of the white man's art". Finding their way barred by
Lake Amadeus and that their horses were getting very weak, they decided to return. Giles viewed
Kata Tjuta from Lake Amadeus, which he named Mount Olga after the Queen of Spain. His group returned to
Charlotte Waters and then to Adelaide. and
Lake Amadeus. He had wanted to name these Mt Mueller and Lake Ferdinand respectively, to honour his benefactor Baron Ferdinand von Mueller, however Mueller prevailed on him to instead honour the
King Amadeus of Spain and
Queen Olga of Württemberg. Giles was beaten to viewing
Uluru by a competing explorer,
William Gosse.
Second expedition Here they encountered and had a skirmish with a group of Aboriginal men. Giles and his men fired their rifles and shotguns at them, but didn't state how many were killed or wounded. They reached
Port Augusta on 23 May and retraced Giles journey back to Wynbring and Ooldea following a generally westerly course. The journey was better than his previous expeditions as the camels were far more attuned to the dry conditions than horses, of which many had cruel deaths on his first two expeditions. After a week's rest, the journey was resumed on 6 October, still heading west. Ten days later the expedition encountered a group of
Kalamaia people at
Ularring. Giles enjoyed a "peaceful and happy" few days with these people until he felt threatened by a large group of men approaching in a ceremonial fashion. Giles ordered his men to attack this group, and despite the pleas from the children who were in the camp to desist, they fired on them with shotguns and
Snider-Enfield rifles. Several were killed and wounded, and Giles made a bonfire of the spears and boomerangs that belonged to the people he afterwards derided as "reptiles". On 17 November 1875 the party arrived at
Guildford, and at
Perth the next day, where they received an enthusiastic reception.
Fifth expedition Giles stayed for two months at Perth, enjoying the public attention, while Tietkens and
Jess Young, another member of the expedition, went back to Adelaide by sea. Giles wished to complete another expedition by going north and inland from the Western Australian coast, through the Gibson Desert and returning to Adelaide via central Australia. On 13 January 1876 Giles began the journey accompanied by Tommy Oldham, Alec Ross, Saleh, Peter Nicholls and the camels. They arrived at
Geraldton before heading inland. At the Cheangwa outstation, leased by
Edward Wittenoom, a large group of young
Badimaya women attached themselves to the expedition until they reached the
Murchison River. Giles described them as a "harem" of naked and "exceedingly pretty" girls. It has been claimed that Giles was the father of least one child born to an Aboriginal mother while he was on his expeditions. They met with a large group of friendly
Wajarri people near the
Gascoyne River who asked Giles in broken English if he would take them to
Melbourne. The request was politely declined and the expedition continued. Giles' eyes became infected with
Chlamydia trachomatis and he was temporarily blinded while travelling through some hills he subsequently called
Ophthalmia Range. They headed east through the Gibson Desert and then mostly followed his previous expedition's path through the
Musgrave Ranges to Beltana in South Australia. This immense journey was made without the difficulties of some of his previous expeditions, largely due to the endurance of his camels and the skill of the cameleer Saleh. They arrived at Adelaide in September 1876. == Late life and legacy ==