With a recent trip to Le Mans and back under my belt, I was keen to find out what the 24 hours of Spa was like.

Racing at Spa started in 1922, and in 1924 the first 24-hour race took place. Originally the Spa circuit was just over nine miles long and featured 25 turns, but revisions and alterations have seen that length drop to less than five miles and 20 turns.

It's a notable circuit for several reasons: it's home to the Belgian Grand Prix, several endurance races and - more prominently - its rated as one of the toughest tracks in the world due to its torturous bends and rapid elevation changes.

When I arrived, the first thing that struck me was that it felt like no other circuit I’d been to. Firstly, the whole place is surrounded by trees. From certain points the track is completely invisible, and you'd be hard pushed to tell there was anything there.

You're quickly lured in to a false sense of serenity, seemingly isolated from anything around you, moments before an Aston Martin screams between the trees in the distance, sparks erupting from its tail as it grounds out through the bend.

Equally attention-grabbing is the rapid and visible changes in elevation around the circuit. As you make your way towards the entrance, the fabled Eau Rouge corner comes in to view and, at a distance, it’s clear just how high the cars are climbing. No wonder this circuit has earned the nickname of the "Ardennes rollercoaster."