D. CANAL TURN
The Canal Turn is so named because the course turns a full 90 degrees on landing and has a canal in front of them on the landing side of the fence.
The race can be won or lost here, with a diagonal leap to the inside of the jump taking the fence at a scary angle, but reducing the turn on landing.
With 30 or more horses still standing, not every rider has the option of this daring passage.
Some will be taken straight out by riderless horses, although the prospect of an early bath in the Liverpool ship canal is now history thanks to an imposing solid fence.
Richard Pitman is a BBC TV pundit and former top jockey.