An enormous sinkhole, about 32 metres wide and twice as deep, appeared near a copper mine in Chile on Tuesday, leading experts to investigate what caused it.
So what does lead to these great holes in the earth?
Many are marvels of nature. According to National Geographic, natural sinkholes appear when soft underground rock under land is easily dissolved — usually by running water or rain.
Man-made sinkholes are typically found in urban centres, where development including buildings and roads compromises the underlying rock it had been built on.
According to the US Geological Survey, trapped rainwater plays its part. Sinkholes cased by rain are common in East Asia and can be deadly.
Geologists say it is hard to predict when the top layer of rock will collapse. The USGS estimates that sinkholes caused $300 million of damage a year in the US, but that figure could be higher.
UAE finds a sinkhole
In October, a blue hole was discovered off the coast of Abu Dhabi in the Arabian Gulf which measured around 12 metres deep and 2,000 metres wide.
The rare underwater sinkhole was found just off Al Dhafra but it pales in size to the deepest blue hole, Dragon Hole, which lies in the South China Sea and reaches around 300 metres beneath the seabed.
Take a look at some of the most spectacular sinkholes in the photo gallery above by clicking on the arrows. If using a mobile device, simply swipe. Learn more about some of the sinkholes mentioned in The National stories below.
The world's most spectacular sinkholes
- Gates of Hell - Turkmenistan
- Fukoaka - Japan
- The Great Blue Hole - Belize
- The Well of Barhout - Yemen
- 2010 Guatemala City sinkhole - Guatemala
- Harbin - China
- Ik Kil cenote - Mexico
- Deep Blue Hole - Bahamas
- 2020 Dead Sea sinkhole - Israel
- Copiapo sinkhole - Chile
'Well of Hell': Omani cave team discover what lurks in Yemen’s strange sinkhole
Giant sinkholes dot the landscape in Turkey's Karapinar — in pictures
Now you see it, now you don’t: Massive sinkhole fixed in days
Mercer, the investment consulting arm of US services company Marsh & McLennan, expects its wealth division to at least double its assets under management (AUM) in the Middle East as wealth in the region continues to grow despite economic headwinds, a company official said.
Mercer Wealth, which globally has $160 billion in AUM, plans to boost its AUM in the region to $2-$3bn in the next 2-3 years from the present $1bn, said Yasir AbuShaban, a Dubai-based principal with Mercer Wealth.
“Within the next two to three years, we are looking at reaching $2 to $3 billion as a conservative estimate and we do see an opportunity to do so,” said Mr AbuShaban.
Mercer does not directly make investments, but allocates clients’ money they have discretion to, to professional asset managers. They also provide advice to clients.
“We have buying power. We can negotiate on their (client’s) behalf with asset managers to provide them lower fees than they otherwise would have to get on their own,” he added.
Mercer Wealth’s clients include sovereign wealth funds, family offices, and insurance companies among others.
From its office in Dubai, Mercer also looks after Africa, India and Turkey, where they also see opportunity for growth.
Wealth creation in Middle East and Africa (MEA) grew 8.5 per cent to $8.1 trillion last year from $7.5tn in 2015, higher than last year’s global average of 6 per cent and the second-highest growth in a region after Asia-Pacific which grew 9.9 per cent, according to consultancy Boston Consulting Group (BCG). In the region, where wealth grew just 1.9 per cent in 2015 compared with 2014, a pickup in oil prices has helped in wealth generation.
BCG is forecasting MEA wealth will rise to $12tn by 2021, growing at an annual average of 8 per cent.
Drivers of wealth generation in the region will be split evenly between new wealth creation and growth of performance of existing assets, according to BCG.
Another general trend in the region is clients’ looking for a comprehensive approach to investing, according to Mr AbuShaban.
“Institutional investors or some of the families are seeing a slowdown in the available capital they have to invest and in that sense they are looking at optimizing the way they manage their portfolios and making sure they are not investing haphazardly and different parts of their investment are working together,” said Mr AbuShaban.
Some clients also have a higher appetite for risk, given the low interest-rate environment that does not provide enough yield for some institutional investors. These clients are keen to invest in illiquid assets, such as private equity and infrastructure.
“What we have seen is a desire for higher returns in what has been a low-return environment specifically in various fixed income or bonds,” he said.
“In this environment, we have seen a de facto increase in the risk that clients are taking in things like illiquid investments, private equity investments, infrastructure and private debt, those kind of investments were higher illiquidity results in incrementally higher returns.”
The Abu Dhabi Investment Authority, one of the largest sovereign wealth funds, said in its 2016 report that has gradually increased its exposure in direct private equity and private credit transactions, mainly in Asian markets and especially in China and India. The authority’s private equity department focused on structured equities owing to “their defensive characteristics.”
RACE CARD
6.30pm: Handicap (TB) $68,000 (Dirt) 1,600m
7.05pm: Meydan Sprint – Group 2 (TB) $163,000 (Turf) 1,000m
7.40pm: Curlin Stakes – Listed Handicap (TB) $88,000 (D) 2,200m
8.15pm: UAE Oaks – Group 3 (TB) $125,000 (D) 1,900m
8.50pm: Zabeel Mile – Group 2 (TB) $163,000 (T) 1,600m
9.25pm: Balanchine – Group 2 (TB) $163,000 (T) 1,800m
10pm: Al Shindagha Sprint – Group 3 (TB) $130,000 (D) 1,200m
Our legal consultant
Name: Dr Hassan Mohsen Elhais
Position: legal consultant with Al Rowaad Advocates and Legal Consultants.
UK-EU trade at a glance
EU fishing vessels guaranteed access to UK waters for 12 years
Co-operation on security initiatives and procurement of defence products
Youth experience scheme to work, study or volunteer in UK and EU countries
Smoother border management with use of e-gates
Cutting red tape on import and export of food
UAE squad to face Ireland
Ahmed Raza (captain), Chirag Suri (vice-captain), Rohan Mustafa, Mohammed Usman, Mohammed Boota, Zahoor Khan, Junaid Siddique, Waheed Ahmad, Zawar Farid, CP Rizwaan, Aryan Lakra, Karthik Meiyappan, Alishan Sharafu, Basil Hameed, Kashif Daud, Adithya Shetty, Vriitya Aravind
On Women's Day
Dr Nawal Al-Hosany: Why more women should be on the frontlines of climate action
Samar Elmnhrawy: How companies in the Middle East can catch up on gender equality
The National Editorial: Is there much to celebrate on International Women's Day 2021?
Justin Thomas: Challenge the notion that 'men are from Mars, women are from Venus'
What is safeguarding?
“Safeguarding, not just in sport, but in all walks of life, is making sure that policies are put in place that make sure your child is safe; when they attend a football club, a tennis club, that there are welfare officers at clubs who are qualified to a standard to make sure your child is safe in that environment,” Derek Bell explains.
Dubai works towards better air quality by 2021
Dubai is on a mission to record good air quality for 90 per cent of the year – up from 86 per cent annually today – by 2021.
The municipality plans to have seven mobile air-monitoring stations by 2020 to capture more accurate data in hourly and daily trends of pollution.
These will be on the Palm Jumeirah, Al Qusais, Muhaisnah, Rashidiyah, Al Wasl, Al Quoz and Dubai Investment Park.
“It will allow real-time responding for emergency cases,” said Khaldoon Al Daraji, first environment safety officer at the municipality.
“We’re in a good position except for the cases that are out of our hands, such as sandstorms.
“Sandstorms are our main concern because the UAE is just a receiver.
“The hotspots are Iran, Saudi Arabia and southern Iraq, but we’re working hard with the region to reduce the cycle of sandstorm generation.”
Mr Al Daraji said monitoring as it stood covered 47 per cent of Dubai.
There are 12 fixed stations in the emirate, but Dubai also receives information from monitors belonging to other entities.
“There are 25 stations in total,” Mr Al Daraji said.
“We added new technology and equipment used for the first time for the detection of heavy metals.
“A hundred parameters can be detected but we want to expand it to make sure that the data captured can allow a baseline study in some areas to ensure they are well positioned.”
Killing of Qassem Suleimani
National Editorial: Suleimani has been killed, now we must de-escalate
Mina Al Oraibi: Air strike casts a long shadow over the decade ahead
Jack Moore: Why the assassination is such a monumental gamble
Matthew Levitt: Iran retains its ability to launch terror attacks
Damien McElroy: A CEO tasked with spreading Iran's influence
Hussein Ibish: Trump's order on solid constitutional ground
Rashmee Roshan Lall: Sound of silence in South Asia
While you're here
Vivian Balakrishnan: UAE and Singapore can be partners for a world in transition
Sholto Byrnes: Singapore poll results show its politics may be at the crossroads
Chitrabhanu Kadalayil: Election is more than just a family feud over Lee legacy
Sholto Byrnes: Mugabe and Lee: two leaders with very different legacies
The BIO
Favourite piece of music: Verdi’s Requiem. It’s awe-inspiring.
Biggest inspiration: My father, as I grew up in a house where music was constantly played on a wind-up gramophone. I had amazing music teachers in primary and secondary school who inspired me to take my music further. They encouraged me to take up music as a profession and I follow in their footsteps, encouraging others to do the same.
Favourite book: Ian McEwan’s Atonement – the ending alone knocked me for six.
Favourite holiday destination: Italy - music and opera is so much part of the life there. I love it.
ELIO
Starring: Yonas Kibreab, Zoe Saldana, Brad Garrett
Directors: Madeline Sharafian, Domee Shi, Adrian Molina
Rating: 4/5
La Mer lowdown
La Mer beach is open from 10am until midnight, daily, and is located in Jumeirah 1, well after Kite Beach. Some restaurants, like Cupagahwa, are open from 8am for breakfast; most others start at noon. At the time of writing, we noticed that signs for Vicolo, an Italian eatery, and Kaftan, a Turkish restaurant, indicated that these two restaurants will be open soon, most likely this month. Parking is available, as well as a Dh100 all-day valet option or a Dh50 valet service if you’re just stopping by for a few hours.
COMPANY PROFILE
The National's picks
4.35pm: Tilal Al Khalediah
5.10pm: Continous
5.45pm: Raging Torrent
6.20pm: West Acre
7pm: Flood Zone
7.40pm: Straight No Chaser
8.15pm: Romantic Warrior
8.50pm: Calandogan
9.30pm: Forever Young
How to avoid crypto fraud
- Use unique usernames and passwords while enabling multi-factor authentication.
- Use an offline private key, a physical device that requires manual activation, whenever you access your wallet.
- Avoid suspicious social media ads promoting fraudulent schemes.
- Only invest in crypto projects that you fully understand.
- Critically assess whether a project’s promises or returns seem too good to be true.
- Only use reputable platforms that have a track record of strong regulatory compliance.
- Store funds in hardware wallets as opposed to online exchanges.
While you're here
Tom Fletcher: How statecraft and summitry will have to adapt
Taylor Luck: Jordanians pin hopes on rebuilding chances in Syria
Gillian Duncan: Progress is slow for women in field of diplomacy
The biog
Birthday: February 22, 1956
Born: Madahha near Chittagong, Bangladesh
Arrived in UAE: 1978
Exercise: At least one hour a day on the Corniche, from 5.30-6am and 7pm to 8pm.
Favourite place in Abu Dhabi? “Everywhere. Wherever you go, you can relax.”
Key facilities
- Olympic-size swimming pool with a split bulkhead for multi-use configurations, including water polo and 50m/25m training lanes
- Premier League-standard football pitch
- 400m Olympic running track
- NBA-spec basketball court with auditorium
- 600-seat auditorium
- Spaces for historical and cultural exploration
- An elevated football field that doubles as a helipad
- Specialist robotics and science laboratories
- AR and VR-enabled learning centres
- Disruption Lab and Research Centre for developing entrepreneurial skills
U19 WORLD CUP, WEST INDIES
Jaishankar, Nilansh Keswani, Aayan Khan, Punya Mehra, Ali Naseer, Ronak Panoly,
Dhruv Parashar, Vinayak Raghavan, Soorya Sathish, Aryansh Sharma, Adithya
Shetty, Kai Smith
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