Complex sentence: The depot at Valley Heights consisted of a locomotive yard, 10 bay roundhouse, 18 metre (60ft) turntable, an elevated coal stage, water tanks and columns and provided pilot (assistant) engines for trains travelling to Katoomba and beyond.
Split into simpler sentences: The depot at Valley Heights consisted of a locomotive yard, a 10 bay roundhouse, 18 metre (60ft) turntable, an elevated coal stage, and water tanks and columns. It provided pilot (assistant) engines for trains travelling to Katoomba and beyond.