Complex sentence: Its total length is about 1340 km (830 miles) and it passes through very remote arid deserts, which have summer temperatures of 50 ° C and scrub territory in Western Australia.
Split into simpler sentences: Its total length is about 1340 km (830 miles). The track passes through very remote arid deserts, which often have summer temperatures of 50 ° C, and scrub territory in Western Australia.