Hawaii volcanoes national parks ncc orig_00000327.jpg
Hawaii volcanoes national parks ncc orig_00000327.jpg
Now playing
03:07
Inside a lava tube
CNN
Now playing
01:52
US to pass 600,000 Covid-19 deaths
POOL
Now playing
02:47
'Surprise is understatement': Reporter on lawmaker's apology
WREX
Now playing
01:00
Explosive chemical factory fire forces evacuation
UNITED STATES - JUNE 9: Attorney General Merrick Garland arrives for the Senate Appropriations Subcommittee on Commerce, Justice, Science, and Related Agencies hearing on the proposed budget for fiscal year 2022 for the Department of Justice on Wednesday, June 9, 2021. (Photo by Bill Clark/CQ Roll Call via AP Images)
Bill Clark/CQ Roll Call/AP
UNITED STATES - JUNE 9: Attorney General Merrick Garland arrives for the Senate Appropriations Subcommittee on Commerce, Justice, Science, and Related Agencies hearing on the proposed budget for fiscal year 2022 for the Department of Justice on Wednesday, June 9, 2021. (Photo by Bill Clark/CQ Roll Call via AP Images)
Now playing
02:34
Merrick Garland releases statement regarding leak probes
Jason Isley/Scubazoo
Now playing
01:18
Mysterious skin disease plaguing sharks near popular dive spot
Israel's Prime Minister Benjamin Netanyahu attends a special session to vote on a new government at the Knesset in Jerusalem, on June 13, 2021. - A delicate eight-party alliance united by animosity for Netanyahu is poised to take over with right-wing Naftali Bennett as prime minister, if the coalition deal passes today's slated parliamentary vote. (Photo by Emmanuel DUNAND / AFP) (Photo by EMMANUEL DUNAND/AFP via Getty Images)
Emmanuel Dunand/AFP/Getty Images
Israel's Prime Minister Benjamin Netanyahu attends a special session to vote on a new government at the Knesset in Jerusalem, on June 13, 2021. - A delicate eight-party alliance united by animosity for Netanyahu is poised to take over with right-wing Naftali Bennett as prime minister, if the coalition deal passes today's slated parliamentary vote. (Photo by Emmanuel DUNAND / AFP) (Photo by EMMANUEL DUNAND/AFP via Getty Images)
Now playing
05:14
Benjamin Netanyahu forced out as Israeli prime minister
screengrab biden g7
pool
screengrab biden g7
Now playing
03:24
Biden ramps up tougher rhetoric against China at G7
Now playing
02:38
CNN's Barbara Starr: No idea why the DOJ snuck into my life
Now playing
08:21
'Very offensive': Mom of US Marine jailed in Russia reacts to Putin's comment
Now playing
02:17
Record heatwave continues to build in the West
View of the construction site of the Taishan Nuclear Power Plant in Taishan city, south China's Guangdong province, 12 September 2012.
Zhou huadong/Imaginechina/AP
View of the construction site of the Taishan Nuclear Power Plant in Taishan city, south China's Guangdong province, 12 September 2012.
Now playing
03:30
Concerns over possible leak at nuclear plant in southern China
GRUENHEIDE, GERMANY - SEPTEMBER 03: Tesla head Elon Musk talks to the press as he arrives to to have a look at the construction site of the new Tesla Gigafactory near Berlin on September 03, 2020 near Gruenheide, Germany. Musk is currently in Germany where he met with vaccine maker CureVac on Tuesday, with which Tesla has a cooperation to build devices for producing RNA vaccines, as well as German Economy Minister Peter Altmaier yesterday. (Photo by Maja Hitij/Getty Images)
Maja Hitij/Getty Images
GRUENHEIDE, GERMANY - SEPTEMBER 03: Tesla head Elon Musk talks to the press as he arrives to to have a look at the construction site of the new Tesla Gigafactory near Berlin on September 03, 2020 near Gruenheide, Germany. Musk is currently in Germany where he met with vaccine maker CureVac on Tuesday, with which Tesla has a cooperation to build devices for producing RNA vaccines, as well as German Economy Minister Peter Altmaier yesterday. (Photo by Maja Hitij/Getty Images)
Now playing
02:50
Bitcoin surges as Elon Musk hints Tesla could accept the cryptocurrency again
Metro Video Services, LLC. -- Austin Division
Now playing
02:42
Number of people killed by guns in US continues to rise
WINDSOR, ENGLAND - JUNE 13: Queen Elizabeth II (C) with US President Joe Biden and First Lady Jill Biden in the Grand Corridor during their visit to Windsor Castle on June 13, 2021 in Windsor, England. Queen Elizabeth II hosts US President, Joe Biden and First Lady Dr Jill Biden at Windsor Castle. The President arrived from Cornwall where he attended the G7 Leader's Summit and will travel on to Brussels for a meeting of NATO Allies and later in the week he will meet President of Russia, Vladimir Putin. (Photo by Steve Parsons - WPA Pool/Getty Images)
Steve Parsons/WPA Pool/Getty Images
WINDSOR, ENGLAND - JUNE 13: Queen Elizabeth II (C) with US President Joe Biden and First Lady Jill Biden in the Grand Corridor during their visit to Windsor Castle on June 13, 2021 in Windsor, England. Queen Elizabeth II hosts US President, Joe Biden and First Lady Dr Jill Biden at Windsor Castle. The President arrived from Cornwall where he attended the G7 Leader's Summit and will travel on to Brussels for a meeting of NATO Allies and later in the week he will meet President of Russia, Vladimir Putin. (Photo by Steve Parsons - WPA Pool/Getty Images)
Now playing
05:01
Queen Elizabeth II greets the Bidens at Windsor Castle
Getty Images
Now playing
00:49
Actor Ned Beatty of 'Deliverance' and 'Superman' dies
World Food Programme
Now playing
01:36
UN report: 350K facing starvation in conflict-hit Ethiopia
CNN —  

An elderly man died after falling into a lava tube on his property in Hilo, Hawaii, police announced on Wednesday.

The man was reported missing after he wasn’t heard from or seen in several days, according to Hawaii Island police. When they went to his home in Kaumana on Monday they discovered the man had plummeted 22 feet below the surface through a soft area of ground on his property into a lava tube, according to a press release.

According to the US Geological Survey, lava tubes are natural channels through which lava travels beneath the surface. Tubes form by crusting over of lava channels and pahoehoe flows. Kaumana Caves Park near Hilo is a destination for hikers that can explore the lava tubes created by an 1881 flow from Mauna Loa.

Police Maj. Robert Wagner told Big Island Now that it appeared the man had been trimming branches when he fell through the soft ground.

Rescue teams were able to rappel into the lava tube and bring the man back up. He was transported to Hilo Medical Center, where he was pronounced dead, the press release said.

Police have not released the man’s name, as his family has not been notified. An autopsy Tuesday determined he died as a result of injuries consistent with falling, police said, and no foul play is suspected.

CNN’s Danielle Sills contributed to this report.