Hanging precariously in tents off a 4,000ft vertical cliff face wouldn't be most people's idea of the perfect camping trip. But these daredevils scale cliffs and pitch their tents thousands of feet up.

These intrepid rock climbers thrill in tackling the longest and hardest - and probably most dangerous - big wall climbs they can find. And as these pictures show, because their climbs can last for weeks they must set up tents on the edge of cliff faces for much needed rest
The collection of photographs is part of a summer-long exhibit of work by Gordon Wiltsie at the Mountain Light Gallery in Bishop, California, USA. The exhibition features an array of stunning images from climbs over the past decade including the first ascent of Great Sail Peak (above) - an overhanging granite wall on Canada's Baffin Island
Gordon Wiltsie said: "During the climb of Great Sail Peak it was the Arctic spring so melting snow on both the summit and a ledge midway up the cliff constantly sent rocks and chunks of ice flying down...
One the size of a car even came crashing down around us. Several times I came within inches of being hit which almost certainly would have been fatal"
Looking out of a hanging tent, high up on Great Sail Peak
"For serious big wall climbers simply being this far off of the ground isn't scary or dangerous in itself...
And although the climb was hard enough that it was possible to take a big fall, the cliff was so steep there were a few ledges to hit and modern ropes are stretchy enough to absorb most of the impact"
Gordon Wiltsie photographs from cantilevered poles high on Great Sail Peak
"Camping in the Portaledges - or hanging tents - is a lot less scary and dangerous than it is climbing outside of them. They're pretty comfortable and you don't actually see the drop below
I find it similar to sleeping in a regular tent. You're always harnessed into a separate anchor from the tent so I felt quite safe - unless I had to lean out to get food or supplies from our haul bags hanging outside"
Mountaineer Alex Lowe hears on the radio that the lead climbers are near the summit of Great Sail Peak
Gordon, from Bozeman in Montana, USA, added: "Although rock climbing like this seems insane, dozens of similar trips take place in remote locations every year"
Gordon Wiltsie climbs high above Queen Maud Land icecap on Rakekniven spire, Antarctica
A mountain climber reads in a portaledge high on Great Sail Peak
I'm really excited about my summer exhibit of my work," says Gordon. The Mountain Light Gallery in California was established by the late Galen Rowell. He's one of my own mentors and also widely considered to be the godfather of modern adventure photography"
Gordon Wiltsie in front of Ulvetanna in Queen Maud Land, Antarctica
 
Memorable May quotes
Memorable May quotes. Celebrity quotes May 2011. The world didn't actually end this month, but a few careers did . Read about those swan songs, plus see which international shockers and steamy scandals made headlines in May.

Harold Camping
"There is no possibility that it will not happen because our information comes from the Bible."

The Christian radio broadcaster  was the key figure behind a popular doomsday prediction that did not come to pass.
President Barack Obama
"On nights like this one, we can say that justice has been done."

On May 1, the president announced the death of the world's most-wanted terrorist.
Arnold Schwarzenegger
"While I deserve your attention and criticism, my family does not."

The former California governor publicly admitted to having an affair and fathering a child out of wedlock . He made the admission after he and his wife announced they are separating .
Dominique Strauss-Kahn
"It is with infinite sadness that I feel compelled today to present to the Executive Board my resignation …"

The IMF accepted the resignation of its managing director after he was arrested for investigation of sexual assault charges.

Lars von Trier
"I understand Hitler ... I sympathize with him a bit."

During a press conference at a prestigious film festival, the Danish director — who's worked with the likes of Nicole Kidman and Bjork — joked about his German heritage.
Newt Gingrich
"I'm not commenting on stuff like that. ... I frankly don't want to play the gotcha games in Washington."

The GOP presidential candidate refused to address recent reports that he has carried significant debt to a luxury store.
Jennifer Lawrence
"We don't drink blood … that's sick."

This indie actress joked about her highly anticipated new movie role to David Letterman, who assumed the plot was just another "vampire deal."
Hillary Clinton
"These are not Western concepts; these are universal human rights."

The secretary of state voiced these words of support of individuals "fighting for equality and justice" on May 17, a significant day for a community working to end discrimination.
Ed Fleming
"It's a historic time we're in all along the Mississippi River."

The commander of the U.S. Army Corps of Engineers explains plans to flood a region of Louisiana to reduce pressure from the rising river.
Kristen Wiig
"We wanted to write a comedy, not a female comedy, just a comedy that has a lot of women in it."

The "SNL" alum discussed the new film that she both co-wrote and starred in
Sugar Ray Leonard
"I realized I would never be free unless I revealed the truth."

In his forthcoming autobiography, the hall of famer claimed an unnamed Olympic boxing coach abused him as a teen.
Katie Couric
"Thank you so much for coming on this extraordinary journey with me."

On May 19, the evening news anchor signed off for the last time, leaving the post after five years.
Don Lemon
"An African-American male is taught that he has to be masculine."

The cable news anchor discussed the difficulty of revealing his homosexuality, an announcement he made public in his new memoir.
Lady Gaga
"My parents got me Stevie Wonder 'Signed, Sealed, Delivered' and the Beatles when I was younger. … Good choices, Mom and Dad."

During her MTV special, Lady Gaga recalls the music she listened to growing up.
Taylor Swift
"I was watching the coverage of the tornadoes backstage at rehearsals, and I wanted to do something for the families affected by the damage."

The influential young country star held a benefit for the residents of this hard-hit Southern town
Erik Spoelstra
"For us to have a chance to win, you cannot afford to get tired."

The Miami Heat head coach egged on one of his star players, who helped the team steal an NBA playoff win from their opponents.

Oprah Winfrey
"It is done."

After 25 years of hosting, Winfrey wrapped her daytime talk show with a star-studded finale.

Summer reading picks
 Summer reading picks.You could squander your summer plowing through a pile of trashy paperbacks. You could spill iced tea or margaritas on their pages and never mind the damage. But if summer brings you more than your usual quotient of time to relax, why not delve into books with a little more meat on their bones? Here are some of summer fiction's best bets.

 ‘The Family Man’
Author: Elinor Lipman

Plot: Lipman's characters are intelligent and urbane, and they do not behave with incivility, even if their ex-wives have dumped them for crass, wealthy businessmen.
 ‘The Secret Speech’
Author:Tom Rob Smith

Plot: The sequel to last summer’s “Child 44” follows a security officer as he struggles to forge a new life with a new job at the Moscow homicide bureau.
 ‘The Selected Works of T.S. Spivet’
Author:  Reif Larsen

Plot: Raised just north of the appropriately named Divide, Mont., by his rancher father and scientist mother, the precocious 12-year-old T.S. is a talented cartographer who dreams of mapping the natural world.
 ‘The Way Home’
Author:  George Pelecanos  He wrote for a gritty HBO drama.

Plot: A generational battle between working-class Thomas Flynn, owner of a carpet business in Washington, D.C., and his son, Chris, who is more concerned with the rules of the urban streets than with his future.
 ‘Lime Tree Can't Bear Orange’
Author:  Amanda Smyth

Plot: In her debut novel, Smyth paints a vivid portrait of a naive young girl who learns some hard truths about herself and her family. Arresting and powerful, it is a shining testament to human resilience.
 ‘The Little Stranger’
Author:Sarah Waters
Plot: A satisfyingly retro ghost story with an extraordinarily sharp dose of psychological terror.
 ‘The Signal’
Author:Ron Carlson

Plot: A bittersweet love story and a rousing adventure set in the remote stretches of the Wind River range of Wyoming, where a couple has planned their 10th annual backpacking trip.
 ‘Good Things I Wish You’
Author:  A. Manette Ansay

Plot: Freshly divorced Jeanette Hochmann is juggling her teaching job at a Miami university, raising her 4-year-old daughter and writing a book on the relationship between 19th century German pianist Clara Schumann and Johannes Brahms, the protégé of Clara’s husband, Robert.
 ‘Where the Money Went: Stories’
Author:  Kevin Canty

Plot: The college boy still reeling from having almost killed his brother; the married drinker who realizes that his new sobriety demands a big change in his life; the father who realizes he can't protect his 4-year-old son.
 ‘The Angel's Game’
Author:Carlos Ruiz Zafon

Plot: In this gothic novel, a young writer receives an offer he can't refuse from an editor.
 ‘Do Not Deny Me: Stories’
Author:Jean Thompson

Plot: More contemporary short stories from one of David Sedaris' favorite writers.
 ‘The Strain’
Author:Chuck Hogan  and Guillermo del Toro

Plot: Vampires threaten humankind in the first of a planned trilogy.
 ‘The Crowning Glory of Calla Lily Ponder’
Author:Rebecca Wells

Plot: A girl grows up in Louisiana and presumably learns divine secrets about the Ya-Ya Sisterhood.
 ‘Rain Gods’
Author:James Lee Burke

Plot:Texas sheriff Hackberry Holland attempts to uncover a grisly mass murder case in a town near the Mexico border.
 ‘Sweet Mary’
Author:Liz Balmaseda

Plot: A woman wrongly charged in a drug case seeks the real culprit in the first novel from the former Miami Herald columnist.
 ‘Imperial’
Author: William Vollman

Plot: A National Book Award winner tackles the moral aspects of life on the U.S./Mexican border.

 ‘Inherent Vice’
Author:Thomas Pynchon
Plot: Another National Book Award winner blends noir and the psychedelic '60s.
 ‘South of Broad’
Author: Pat Conroy

Plot:Charleston teens form a bond for life.
‘That Old Cape Magic’
Author:Richard Russo

Plot: Middle-aged people experience joy and angst in Cape Cod.