Travel news: Iceland bathing spots and the world’s best hiking trails

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(CNN) – In travel news this week, Spain is offering free train travel, Southwest Airlines is making its vouchers valid forever, and we take a look at the world’s biggest hiking trails and Iceland’s best bathing spots .

wild World

As Shark Week draws to a close, we have some tips for surviving an onslaught from one of our sharp-toothed friends. Don’t wear bling in the ocean, avoid river mouths and fishing areas, and be sure to maintain eye contact if an older person starts circling you.
If you’re brave enough, you can watch this video showing a diver’s close call with a giant Great White. And in another video from Hawaii this week, a woman was attacked by a hermit seal while she was swimming.
Meanwhile, in Israel, rising water temperatures have created ideal conditions for swarms of the beautiful but venomous jellyfish, causing the tourism industry to lose millions in revenue. See here.

bridges and trains

Traveling around Europe is getting a little easier. A long-awaited bridge has just opened in Croatia, connecting the two parts of the country’s Adriatic coast and reducing the need for border checks through Bosnian territory.
There is also an emphasis on expanding the continent’s high-speed rail network to provide a reliable and sustainable alternative to air travel. Here’s what the progress has been on that so far.

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a step further

Taiwan is inviting visitors to shut their mouths and open their ears while walking the world’s first “certified quiet hiking trail” around the country’s Kuifeng Lake. The lowest measured volume on the trail is less than 25 decibels, allowing ramblers to wind through chirping birds, humming instincts, frog calls and rustling leaves.
Further west in the land of the Thunder Dragon – known as Bhutan – the 250-mile-long Trans Bhutan Trail has been opened to travelers for the first time in 60 years. The historical pilgrimage route crosses the Himalayan kingdom from its Tibetan border to the edge of India.
And rounding out our month of hiking tales, we took a look at 23 of the best trails in the world, from Spain’s Camino de Santiago to Uganda’s Bwindi Impenetrable Forest.

aviation news

The strike action on Germany’s national airline Lufthansa this week led to the cancellation of more than 1,000 flights and affected more than 130,000 passengers.
Texas carrier Southwest Airlines had a better week for customer relations: It’s announced that, starting July 28, all of its airline vouchers will be valid forever.
And finally, an unruly passenger on a Virgin Atlantic flight from London to Los Angeles diverted the flight to Salt Lake City; The 39-year-old man is accused of attempting to bite a fellow passenger.

Iceland

Iceland has underground volcanic sources to thank for its endless supply of geothermal water. Here are the best bathing spots to enjoy them all year round.

In Case You Missed It

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A pilot captured video of a mysterious red glow over the Pacific Ocean.

Warning sirens have been sounded regularly across France since the Cold War.

Colorado start-up Boom Supersonic has unveiled a new design for its supersonic jet.

Its Overture Craft is expected to fly its first passengers before the end of the decade.

breakfast decision

Stomach rumblings are a risk while traveling, but eating on the go isn’t always easy. Greasy, sticky fingers, melted chocolate or crushed dishes—that’s a big old headache. Our partners at CNN Underscore, a CNN-owned product review and recommendation guide, have selected the 24 best travel snacks to bring along on your next vacation.