 Complete the following phrase:  Arriving in Wadi Halfa, Sudan, Palin boards a train bound for Khartoum, the capital. There he learns that he will be unable to journey further south into Sudan due to the ongoing conflict in the southern region of the nation. Seeking an alternative, he finds Eritreans willing to drive him to the border with Ethiopia. While waiting to leave Khartoum he inspects some camels in nearby Omdurman and a Muslim Sufi ceremony where people dance to attain religious ecstasy. When it comes time to leave Khartoum, the journey to the town of Gedaref near the Ethiopian border is hampered by poor road conditions, and the vehicles are repeatedly stuck in the ruts left in the dirt from large trucks that travelled the road in the rainy season, forcing Palin and the other passengers to push them free. Compounding the difficulty, in Ethiopia a 