1. The Bolton Strid, England

This peaceful, picturesque creek located in Yorkshire, England hardly looks like one of the deadliest places in the world, but don’t let it fool you. Many claim these waters boast a 100% fatality rate for every human that has had the misfortune of falling into them.

While other parts of the river widen to 30 feet across and remain quite shallow, this particular stretch of creek narrows down to only 6 feet across, and therein lies the danger. Instead of width, the river suddenly becomes incredibly deep and tumultuous, with powerful currents driving down into a series of chasms and crevices. One misstep and you’d find yourself tugged under and plummeting below.

2. Sahel, North Africa

Being as large a continent as it is, Africa is well known for being home to some of the most challenging and dangerous environments in the world. The Sahel region of North Africa is no different, being plagued by intense, unrelenting droughts and famine after massive overexploitation from humans.

With record temperatures reaching over 120 degrees Fahrenheit, this can be a wickedly deadly combination. Due to the drought and high temps in 2010, it was estimated that 350,000 people were up against starvation, with another 1,200,000 struggling with famine as crops failed in the intense environment.

3. Snake Island, Brazil

Officially named Ilha da Queimada Grande but known more by its startling moniker, Snake Island is a small landmass off the coast of Brazil that is closed to everyone except members of the Brazilian Navy and certain selected researchers. A number of snakes originally became trapped here when rising sea levels disconnected the island from the mainland. As they adapted, their population rose exponentially.

Some estimates say there’s as many as one snake per every 10 square feet, though there are certain areas of higher concentrations. Many of the slithering inhabitants are venomous, and it is the only area in the world that one can find the critically endangered golden lancehead pit viper.

4. Death Valley, USA

You don’t get a name like Death Valley for nothing. Located in the Mojave Desert, temperatures in Death Valley routinely rise to 130 degrees Fahrenheit. Hiking isn’t advised anytime after 10 am, and warnings are abound even for car goers as the intense heat can often lead to vehicles overheating and stranding passengers in the dangerous temps.

Death Valley claims an average of 10 people per year due to things such as heat stroke or dehydration. While the desert can be a beautiful place to explore, one wouldn’t blame you for seeking an adventure elsewhere.

5. Lake Natron, Tanzania

While it’s red, the salt-crusted top can be truly stunning, Lake Natron isn’t any place you’d want to dip your toes into. Routinely reaching temperatures of 120 degrees Fahrenheit, these waters have extremely high alkaline levels that have reached a pH level greater than 12.

Though a few species have adapted specifically to thrive in the lake’s bizarre and dangerous environment, the water can easily burn the skin and eyes of people and other animals. Oddly enough, this deadly lake is a popular spot for large groups of flamingos.