Visiting the Grand Canyon on Yahoo! News Photos

In this photo taken Tuesday, April 28, 2009, Ian Buchanan, right, ...

(AP) — Tue, 23 Jun 2009 21:40:15 GMT

(AP) - In this photo taken Tuesday, April 28, 2009, Ian Buchanan, right, a seasonal worker at Grand Canyon National Park, answers questions from Mac Ward of Charlottesville, Va., at the Grand Canyon. The Grand Canyon lures millions of people each year with its colorful landscape, immense size, and awe-inspiring geology. But it presents obstacles that can leave even experienced hikers emerging sore and fatigued — scorching heat during summer months, an altitude of 7,000 feet, and steep, rocky, winding trails. (AP Photo/Felicia Fonseca)

In this photo taken, Tuesday, April 28, 2009, Eric Gray, a trails ...

(AP) — Tue, 23 Jun 2009 21:40:07 GMT

(AP) - In this photo taken, Tuesday, April 28, 2009, Eric Gray, a trails maintenance worker at the Grand Canyon, leads a group of mules carrying supplies down a popular park trail on Tuesday, April 28, 2009 in the Grand Canyon National Park. The Grand Canyon lures millions of people each year with its colorful landscape, immense size, and awe-inspiring geology. But it presents obstacles that can leave even experienced hikers emerging sore and fatigued — scorching heat during summer months, an altitude of 7,000 feet, and steep, rocky, winding trails. (AP Photo/Felicia Fonseca)

In this photo taken Tuesday, April 28, 2009, Eliza Anti, 31, ...

(AP) — Tue, 23 Jun 2009 21:40:04 GMT

(AP) - In this photo taken Tuesday, April 28, 2009, Eliza Anti, 31, and Michael Parker, 32, of Hardwick, Vt., near the end of their days-long hiking and camping trip they took with their daughters at the Grand Canyon. The Grand Canyon lures millions of people each year with its colorful landscape, immense size, and awe-inspiring geology. But it presents obstacles that can leave even experienced hikers emerging sore and fatigued — scorching heat during summer months, an altitude of 7,000 feet, and steep, rocky, winding trails. (AP Photo/Felicia Fonseca)

In this photo taken Tuesday, April 28, 2009, Eric Gray, a trails ...

(AP) — Tue, 23 Jun 2009 21:40:01 GMT

(AP) - In this photo taken Tuesday, April 28, 2009, Eric Gray, a trails maintenance worker at the Grand Canyon, leads a group of mules carrying supplies down a popular park trail in Grand Canyon National Park. The National Park Service is asking the public to weigh in on mule operations at the Grand Canyon. (AP Photo/Felicia Fonseca)

In this May 2005 file picture, members of the Chinese Mount ...

(AP) — Tue, 06 Jan 2009 23:09:59 GMT

(AP) - In this May 2005 file picture, members of the Chinese Mount Everest expedition team climb up to measure the height of the mountain in this May 2005 file photo. The Grand Canyon, Loch Ness and Niagara Falls are among over 200 natural sites competing to become the New 7 Wonders of Nature in a global poll that is expected to draw around a billion voters, organizers said Wednesday, Jan 7, 2009. The 261 nominees from 222 countries around the world include some of the most famous mountain peaks, lakes, national parks or reefs, such as Mount Everest or the Great Barrier Reef. (AP Photo/Xinhua, Suolang Luobu)

The Verkamp's Curios gift shop in Grand Canyon National Park ...

(AP) — Wed, 30 Apr 2008 21:42:56 GMT

(AP) - The Verkamp's Curios gift shop in Grand Canyon National Park in Arizona is shown in this 1910 photo released by the Grand Canyon Museum Collection. These days, the Grand Canyon has luxury lodges and cute coffee shops. The only thing it won't have come September is the Verkamps. The family's final chapter at the canyon began in 1998, when Congress passed a law that reversed giving preference to established businesses when issuing contracts. (AP Photo/Grand Canyon Museum Collection)

Italian friends, back row from left, Cristina Gialanella, Federica ...

(AP) — Mon, 21 Apr 2008 16:06:02 GMT

(AP) - Italian friends, back row from left, Cristina Gialanella, Federica Minguzzi, Jessica Farella, Elena Albertini, and ,front row from left, Massimo Romani and Nicola Vianello pose on March 6, 2008. The group visited the Grand Canyon, which is seeing more foreign tourists because of the weak U.S. dollar and comparatively cheap gas prices. (AP Photo/Amanda Lee Myers)

Tourists stand on an overlook on the south rim of the Grand ...

(AP) — Mon, 21 Apr 2008 16:04:33 GMT

(AP) - Tourists stand on an overlook on the south rim of the Grand Canyon on March 6, 2008. Park officials say they're seeing a sharp increase in international visitors, who are taking advantage of the weak U.S. dollar and comparatively low gas prices. (AP Photo/Amanda Lee Myers)

John and Christine Rickard from England's Isle of Wight get ...

(AP) — Mon, 21 Apr 2008 16:04:22 GMT

(AP) - John and Christine Rickard from England's Isle of Wight get their picture taken on March 6, 2008, at the Grand Canyon. The couple took advantage of the weak U.S. dollar and spent three weeks in the western United States. (AP Photo/Amanda Lee Meyers)

Joel Hoppe, left, and Steve Meissner from Berlin are shown on ...

(AP) — Mon, 21 Apr 2008 16:03:49 GMT

(AP) - Joel Hoppe, left, and Steve Meissner from Berlin are shown on March 6, 2008 near the Grand Canyon in Ariz. The two friends drove along the south rim of the Grand Canyon in this 1956 butter yellow Cadillac that Meissner bought online from Germany. Meissner could have had it shipped back home, but he and Hoppe decided to take advantage of the weak U.S. dollar and 'cheap' gas prices and make a road trip of it. (AP Photo/Amanda Lee Myers)

John George Verkamp stands by his tent and souvenir shop in ...

(AP) — Mon, 21 Apr 2008 15:07:24 GMT

(AP) - John George Verkamp stands by his tent and souvenir shop in what is today Grand Canyon National Park in Arizona in this 1897 photo provided by the Grand Canyon Museum Collection. These days, the Grand Canyon has luxury lodges and cute coffee shops. The only thing it won't have come September is the Verkamps. The family's final chapter at the canyon began in 1998, when Congress passed a law that reversed giving preference to established businesses when issuing contracts. (AP Photo/Grand Canyon Museum Collection)

Tourists stand at Bright Angel Point facing the Grand Canyon's ...

(AP) — Mon, 14 Jan 2008 17:30:35 GMT

(AP) - Tourists stand at Bright Angel Point facing the Grand Canyon's North Rim in this April 7, 2005 file photo in Grand Canyon, Ariz. Visitors to the Phoenix area can visit the Grand Canyon in under a 4 hour drive. (AP Photo/Matt York, FILE)

People walk on the Skywalk during the First Walk event at the ...

(AP) — Fri, 07 Dec 2007 06:41:56 GMT

(AP) - People walk on the Skywalk during the First Walk event at the Grand Canyon on the Hualapai Indian Reservation at Grand Canyon West, Ariz., in this March 20, 2007 file photo. Starting in Jan. 2009, a global poll will allow people worldwide to vote and select the seven natural wonders of the world. (AP Photo/Ross D. Franklin, File)

With the North Rim in the background, tourists hike along the ...

(AP) — Wed, 05 Dec 2007 22:48:03 GMT

(AP) - With the North Rim in the background, tourists hike along the South Rim of the Grand Canyon in this Feb. 22, 2005 file photo in Grand Canyon, Ariz. Starting in Jan. 2009, a global poll will allow people worldwide to vote and select the seven natural wonders of the world. (AP Photo/Rick Hossman, File)

A double rainbow forms at Hopi Point, after a rain shower at ...

(AP) — Wed, 05 Dec 2007 22:47:22 GMT

(AP) - A double rainbow forms at Hopi Point, after a rain shower at Grand Canyon National Park in Arizona in this Nov. 8, 2004 file photo. Starting in Jan. 2009, a global poll will allow people worldwide to vote and select the seven natural wonders of the world. (AP Photo/Jim McKnight, File)

FILE ** People walk on the Skywalk during the First Walk event ...

(AP) — Wed, 05 Dec 2007 22:43:58 GMT

(AP) - FILE ** People walk on the Skywalk during the First Walk event at the Grand Canyon on the Hualapai Indian Reservation at Grand Canyon West, Ariz., in this March 20, 2007 file photo. Starting in Jan. 2009, a global poll will allow people worldwide to vote and select the seven natural wonders of the world. (AP Photo/Ross D. Franklin, File)

The walls that ring the city of Harar look, July 21, 2007, much ...

(AP) — Mon, 17 Sep 2007 16:02:27 GMT

(AP) - The walls that ring the city of Harar look, July 21, 2007, much as they did hundreds of years ago. For 1,000 years, this city on a hilltop has been a center of Islamic faith in the Horn of Africa, with a forbidding, 4-meter (13-foot) wall surrounding ancient mosques and serpentine alleyways. Harar was named a UNESCO World Heritage site last year, joining some of the world's top landmarks such as the Grand Canyon in the United States, the Great Wall of China and the Acropolis in Greece. It is also the fourth holiest city in Islam — behind Mecca, Medina and Jerusalem. (AP Photo/Anita Powell)

The Skywalk hangs over the Grand Canyon on the Hualapai Indian ...

(AP) — Thu, 29 Mar 2007 01:25:06 GMT

(AP) - The Skywalk hangs over the Grand Canyon on the Hualapai Indian Reservation at Grand Canyon West, Ariz., prior to a grand opening ceremony,Tuesday, March 20, 2007. (AP Photo/Ross D. Franklin/FILE)

NASA astronaut Buzz Aldrin, Native American NASA astronaut John ...

(AP) — Thu, 29 Mar 2007 01:24:24 GMT

(AP) - NASA astronaut Buzz Aldrin, Native American NASA astronaut John Bennett Herrington, Las Vegas businessman David Jin and tribal leaders make the first walk onto the new Skywalk during the First Walk event as over the Grand Canyon on the Hualapai Indian Reservation at Grand Canyon West, Ariz., Tuesday, March 20, 2007. (AP Photo/Ross D. Franklin)

The Skywalk hangs over the Grand Canyon on the Hualapai Indian ...

(AP) — Mon, 26 Mar 2007 15:06:51 GMT

(AP) - The Skywalk hangs over the Grand Canyon on the Hualapai Indian Reservation at Grand Canyon West, Ariz., prior to a grand opening ceremony,Tuesday, March 20, 2007. (AP Photo/Ross D. Franklin)

An artist's undated rendering provided by Grand Canyon West ...

(AP) — Mon, 12 Feb 2007 16:09:54 GMT

(AP) - An artist's undated rendering provided by Grand Canyon West shows the Hualapai Indian Tribe's Skywalk, a glass-bottom observation deck 4,000 feet above the Colorado River hanging over the western edge of the Grand Canyon. The Hualapai Indian tribe is hoping to change its fortunes by building the Skywalk as a tourist attraction. But the $30 million Skywalk, set to open in March, has also ignited a debate among Hualapai elders who question whether the prospect of riches is worth disturbing sacred ground. (AP Photo/Grand Canyon West/FILE)