Just Back: the Pompeii of fairgrounds It was as though people left in a hurry. The Pompeii of fairgrounds. Perhaps South Koreans lacked the morbid fascination with derelict buildings that had me and my friends enthralled. In one hut, hundreds of pamphlets had been tipped over and littered the floor. An unwanted bag lay in the corner, still zipped up and covered in cobwebs. It was perhaps best left that way. Vines were consuming the metal structure of a rollercoaster. The cars were shaped like smiling ducks. One hung down from the rails, suspended. A reminder of why the park closed [after two fatal accidents involving the rollercoaster in the Nineties the park was deemed unsafe]. We kicked a volleyball around. I got carried away. The ball disappeared into a thick knot of weeds and bushes. Another human creation reclaimed by nature here. The town of Okpo nearby is a shipbuilding hub. Standing on top of the highest peak of the duck rollercoaster, I looked north to the port where huge cranes were loading parts onto half-finished ships. This whole world seemed either half complete or half decayed. The sound of the distant construction reverberated off the surrounding hillside. It sounded eerily like the clack-clack of a rollercoaster ascending slowly before the drop. New vessels mimicking the ghosts of the old. It was nice to know that something so forgotten could still inspire so much joy. For the two days I was there, I became that seven-year-old boy again in the cinema watching Jurassic Park, exploring a long forgotten treasure. We exited under the rusted metal entrance gate that read "Thanks for Visiting Okpo Land." As we walked back down into Okpo town, I was on the lookout for old Korean ladies selling blackberry crumble. I turned for a last look. I could have sworn I saw a velociraptor slink away into the bushes. Enter the next round Your travel writing could earn you £1,000. That's the prize for our Just Back article of the year. The weekly prize is £200 in the currency of your choice from the Post Office. Email your entry, in as close to 500 words as possible (with the text in the body of the email itself rather than attached), to justback@telegraph.co.uk by midnight next Wednesday, July 24. Click here for more information and full terms and conditions The Post Office is Britain's largest travel money provider. It offers more than 70 different currencies with 0% commission on all currency and traveller's cheques. Customers can buy selected currencies over the counter at 8,000 branches and all currencies can be ordered for next-day delivery at 11,500 branches nationwide. Orders can also be placed online at www.postoffice.co.uk