gordon rides his bike to the top

Up there they’re selling those bike balloons.
You need 62 of them to get down to the base,
31 in the front and 31 in the rear of the bike.
It is recommendable to use additional 12 balloons,
6 in the front and 6 in the rear.
Getting down takes 8 minutes.
And you have to sign into the book of descents.