Complex sentence: Between 1890 and 1891 he explored the unknown territory of Migiurtinia with significant cartographic and ethnographic observations, in 1896 he made a new crossing of the Libyan desert up to the Oasis of Siwa.
Split into simpler sentences: Between 1890 and 1891 he explored the unknown territory of Migiurtinia with significant cartographic and ethnographic observations. In 1896 he made a new crossing of the Libyan desert up to the Oasis of Siwa.