Mount Everest is the highest mountain. Its summit is 29,029 feet above sea level.

If climbers want to summit Mount Everest, they have to brave the “death zone” — the area above 8,000 meters (26,247 feet) in altitude, where there is so little oxygen that the body starts to die, minute by minute and cell by cell.

Last week, at least 11 people died on Everest, which is the tallest peak at 29,029 feet (8,848 meters or 5.5 miles) above sea level. Some collapsed from exhaustion after waiting in line for hours on narrow parts of the route to ascend to the summit, according to The Kathmandu Post.

Read More: What happens to your body in Mount Everest’s ‘Death Zone,’ where 11 people have died in the past week

But Everest isn’t the only Himalayan peak on which climbers face the death zone. In fact, nine other mountains are deadlier than Everest.

According to NASA’s Earth Observatory, Annapurna I — the 10th-highest mountain — is the most dangerous to climb, with a fatality rate of 32% as of 2012. K2, second-highest peak, is almost as dangerous, with a fatality rate of 29%. Everest, by contrast, has a 4% fatality rate.

Granted, Mount Everest has seen many tragedies since 2012. In 2015, a magnitude 7.8 earthquake struck Nepal, sending an avalanche careening into Everest’s base camp. More than 20 people were killed.

Here are the 10 deadliest mountains in the Himalayas, in order from most to least deadly, according to NASA.

Annapurna I, the 10th-highest mountain, has a fatality rate of 32%.

Annapurna I`
A view of Annapurna 1’s snow-covered North Face at sunrise.

According to NASA’s Earth Observatory, only 191 people had successfully climbed Annapurna as of 2012, far less than any other 8,000-meter mountains. 

The first people to climb Annapurna I were the French climbers Maurice Herzog and Louis Lachenal in 1950. Though they reached the summit on their first try, extreme frostbite and gangrene set in on their way down the mountain. A doctor had to amputate all of Herzog’s and Lachenal’s toes, as well as all of Herzog’s fingers.