Passage Five
Right now, somewhere in the world, Tom Turcich is walking. He started his hike in April 2015 and is still going.His intention is to walk across every continent in the world.
Tom made the decision to travel the world after one of his close friends died at the age of 17. The tragedy encouraged Tom to make the most of his own life. He spent the next few years completing college and working to save money, and in 2015, he finally quit his job, packed a few belongings and set off on foot from his home in New Jersey, USA.
He took a route south through the USA and Central America and down the west coast of South America. After that, he travelled to Antarctica and Europe aboard a ship, and he is currently walking across North Africa. From there, he'll hike east through Asia and Australia. Then he plans to fly to the west coast of the USA and cross that on foot,back towards his final destination, his home in New Jersey.
Tom isn't walking alone. He picked up a dog called Savannah from an animal shelter in Texas. At first,he thought it would be useful to have a dog protecting him, but the two soon became perfect travel companions. He thought he would have trouble crossing borders with the dog,but he acquired a certificate proving that it was free of disease and since then the process has been surprisingly simple.
Tom has encountered a number of difficulties on the way, such as walking across the mountains and volcanoes of Guatemala. They were so steep that he could only manage about 10 miles a day.
Tom keeps a blog where he documents his travels and posts wonderful photographs that he has taken along the way. He had never been interested in photography before he started his trek but now loves the art form. He hopes that after returning to the USA,he will be able to work as a travel writer or photographer.
【问题】What is the central theme of Tom Turcich's jourmey?