The Great Explorers stamps celebrate three of the more notable explorers of Discworld

Llamedos Jones was an explorer from Llamedos, He was hampered in his voyages of discovery by the fact he wasn't really looking for new lands to conquer: his main priority was evangelising his sect of Strict Observance Druidism to the heathen, ie everyone who wasn't already a Strict Observance Druid. So he would set off in a small leather and wicker coracle, equipped with nothing more than a holy sickle, a sack of mistletoe, a small portable stone circle of the laptop variety, and a harmonium for the hymn singing. Unfortunately, he could travel for no further than three and a half days in any direction before being compelled to return to Llamedos for the necessarily strict druidic observances and male voice choir practice once a week. He was finally given dispensation by the circle elders to miss services and is believed to have discovered the Brown Islands by the very practical technique of continuing in a straight line until he hit something.

Lady Alice Venturi gained access to the family fortunes late in life, which allowed her to travel in what she coyly referred to as the "Dark Hinterland" of Klatch and Howondaland. In pursuit of the ethnography and anthropology, she traveled widely among the sort of peoples who people in Ankh-Morpork would consider to be backward and primitive, meticulously collecting details of their quaint and folklorique ethnic pathways. The extensive records she brought back were used to illuminate her public speaking engagements, which were inevitably sellouts. Part of the reason why her talks were sellouts with standing room only may be gleaned from the titles of her books: The Harem Frescoes of Old Klatch, Interesting Customs Among the N'Kouf, and Travels in the Dark Hinterland. The few existing copies of The Harem Frescoes of Old Klatch, Interesting Customs Among the N'Kouf which did not spontaneously combust on printing, are now sought after among the more discerning collector. Her collection of tribal fetishes and ceremonial objects is locked up in a secure vault: a typical example is labeled Personal Ornament of T'etse Males Over The Age of Thirteen . There is a suspicion that as the tribes got to know her, some of the more inventive and ingenious traditional ceremonies were devised especially for her, amidst much amusement.

Sir Roderick Purdeigh was a well-known, but not terribly bright, explorer, who spent many years looking for XXXX, and never found it. According to the Dean of Unseen University, he once got lost in his own bedroom (in the wardrobe in fact). Despite his failure to find XXXX, let alone their fabled companion Foggy Islands, he is listed in Wasport's Lives of the Very Dull People. He is understood to have spent several years going round and round in circles in the Circle Sea, just out of sight of land, under the mistaken impression that he was circumferentially navigating the Disc. He returned to Ankh-Morpork claiming to have proven that the Disc had a circumference of several million miles. He met an untimely end in Bhangbhangduc at the hands of the natives. We know that Purdeigh was somewhat intolerant of untidy lazy slackers and foreigners, believing any little difficulties could be resolved by a few prods of the blunt end of his walking-stick to get them to shape up and show some backbone. As his last, sadly unfinished, book, The Man of the Woods, relates, Purdeigh was so incensed at the comportment of a group of red-haired slovenly rascals that he resolved to teach them a jolly good lesson with the said walking-stick. We know today he had not encountered men, so much as the great ape, Pongo Pongo. Whoops.