Here is the fourth and last part. Please note that it couldn't translate the word "evtl". This is an abbreviation an means "possibly". Let me know if you need anything else.

Supplying possibility. Drive on in deeply brought in traces in the sand into the 35km removed Mellit N14°07`39 ", E25°32`06 ".
Mellit: Gutes Wasser kann aus Brunnen mit Motorpumpe gefaßt werden. Amazingly large city with relatively good supplying possibility, market, fuel, customs office, police, Security. Here the departure formalities from the Sudan must be made after refuelling. Fuel, as well as many supplies come by trucks from Libya. Es muss hier der gesamte Treibstoff für die Strecke bis in das 1.300km distant Kufra to be loaded hoppers and this with 800km of fuel-corrosive sand travel. If the fuel should become scarce despite precaution, then can be tried to buy from Libyan truck drivers somewhat.
30km behind Mellit one reaches the village Sajah, N 14°18`40 ", E25°45`26 ", well, small shops. Further 46km thereafter with N14°36`08 ", E26°02`18 "the village Madu. Far away from it 58km is appropriate for Malha, N15°05`25 ", E26°09`36 ". Absolutely worth seeing approx. the 80m lain northeast is deep krater with salt lake from Malha with N15°07`39 ", E26°10`32 ". It lies in one of the place from well visible volcano and serves the Nomaden of the region as watering place and salt deposit for the herds of camel. It is possible to drive with the jeep to at the Kraterrand.
From Malha the unmarkierte distance leads further 38km after after 44km into a village with N15°23`15 ", E26°03`16 "and after Harra, N15°35`17", E26°14`52, which represents a kind truck lay-by. 100km north Harra ends the vegetation and one reached on isolated trace bundles in the deep sand after 160km the Wadi Howar with N16°57`26 ", E26°04`04 ".
From the Wadi Howar lead many, trace bundles blown apart-running far on far distances by deep sand to the north and achieve after over 400km the Sudanese police base Karabatum, N 20° 13. 49`, E 25° 30. 13` the last 100km before Karabatum are not continuous sand, but on far distances also kiesiger and stony underground. In Karabatum message is necessarily, which passport registered, water if necessary available. Here happen also the LKWs and all-wheel-driven buses, which drive removed Dongola into approx. 5taegiger travel from Kuftra over Karabatum into the 600km. The runway there is far less sandig after hearing than the runway after Mellit.
Von Karabatum führt eine 200km lange Piste an die libysche Grenzstation Al Awaynat N21°52`10", E24°48`22" am Fuße des Jabal al Awaynat-Gebirges. There entry formalities are to be settled. It is present and if necessary a small business with important basic food can by the police gasoline or by Libyan truck diesel oil be acquired. The entry and departure are permitted since 1992 until today only Arabs, not however Europeans or Schwarzafrikanern! Wasser muß von der 8km östlich, direkt am Fuß des Berges im Fels gelegenen Wasserstelle Ayn al Gazal, N21°48`50", E24°51`29" geholt werden. At the 3. February 1994 awarded the international Court of Justice in the Hag to the Aouzu strip Chad disputed between Libya and Chad. Libya has thereupon this land strips under UN monitoring up to 30. May clearing. The internationally recognized border runs now in such a way, as it was always drawn in in the IGN map. An entry from Libya into north Chad is further not possible for Europeans however