We visited Machu Picchu but the real fun began
As we were walking along the the train tracks (always a good plan)
We entered a tunnel, there was no way around
And of course halfway through we heard a rumbling sound
Through the darkness a light appeared, revealing our faces
A mixture of horror and disbelief as we searched for human-sized spaces
Like geckos we hugged the wall, trembling but steadfast
Then a squeal of delight as the train hurtled past