Two 19-year-old British men killed in a car accident while traveling in Bolivia were named after Freddie McLennan and Joe Atkins.
The 22-year-old Bolivian driver – named locally as Alberto Barco – also died in the crash, while a third British man was taken to hospital.
Mr McLennan and Mr Atkins were both trained students of the 500-year-old Cranbrook School in Kent and their travels after finishing their A-levels.
The Salary of Uyuni – the world's largest flat salt.
Bolivian authorities said in the accident on Sunday.
Mr McLennan's family paid tribute to him as an exceptional young man who was "as caring as he was fun to be with".
"He excelled at school and his exam results were a source of great pride," they said.
"He was thoroughly enjoying the world, before preparing for the next internship in his life at Leeds University."
Mr McLennan's family added: "We are eternally grateful that Freddie came into our lives. We are struggling to come to terms with his passing.
"He brought a joy and love to us, which we will always remember, but miss greatly."
Mr Atkins' family said: "Joe had a character with humor and humility, and anyone who knew him was struck by his understated yet self-assured nature.
"Quietly intuitive, he always knew the right thing to say, and the role that he played in the relationship and proudly loyal friend, will be appreciated by those who knew him.
"Always seeking the fun side of life as a little boy, he grew up to be a young man and loved ones, and he remained quietly ambitious and determined in his pursuit of a career in engineering, for which he achieves such a fantastic A-level results. "
The Atkins family added: "In a recent call to his family, he was clearly so elated with the adventure he'd been sharing with his best friends. He said how much he was looking forward to being back to home comforts, and moving to the next internship at the University of Bristol.
"Joey was the one who gave us endless pride, the brother who brought us laughter to our home and the friend that you'd always want by your side."
In a statement published on its website, the Cranbrook School said: "We share the grievance of the families and their tragic loss and offer our sincerest condolences."
The experience of driving on the salt flats has been compared to driving through clouds by travelers.
But travel publisher Lonely Planet warns: "Travelers should take a great deal of care when they visit the salt flats.
"Fatal accidents due to unsafe vehicles and drivers are not unheard of."
The Foreign Office said: "We are supporting the families of the British people who have been involved in a car accident in Bolivia and are in close contact with the Bolivian authorities."