Sometimes hellholes are self made.
In confined spaces, one breathe may be your last.
If attempting a rescue it is imperative you don't breath until clear.
If you can't do this, get trained rescuers.
High levels of HS2 and other poisonous gases can cause you to gasp involuntary even if you hold your breathe, game over.
Better one dead than three.
This happens a lot.
Know when to bug out!
There's no glory in being a dead victim.
The tight-knit country NSW town where three family members were found dead inside an empty water tank is struggling to come to terms with the tragic loss of the well-liked and respected trio.
Andrew Basnett, his wife Anne and brother Richard all died after becoming overcome by what's believed to be carbon monoxide fumes inside the tank at their farm outside Gunning, near Yass, on Thursday afternoon.
Andrew, 69, was using a high-pressure water pump to clean the empty in-ground cement tank when he collapsed.
Richard, 68, jumped in to check on him, but he too succumbed to the fumes and fell to the ground.
Anne, 63, suffered the same fate after she climbed in to help the pair.
"There was a petrol pump being used to clean the tank and that may have been the cause of the build of fumes at the bottom of the water tank," police superintendent Andrew Koutsoufis said on Friday.
A neighbour, who Anne had alerted before she climbed into the tank, found the trio just after 6pm on Thursday.
Their bodies remained in the tank overnight as rescue specialists waited for the gases to dissipate.
Yass Valley Deputy Mayor and close friend Kim Turner says the close-knit town of Gunning - which has a population of about 450 - is still coming to grips with the deaths.
"They were wonderful community people and very well respected sheep breeders," he told AAP, adding Andrew and Anne were always willing to help "anyone in need".
"It's horrendous. It's hard to imagine any circumstances other than a car accident where you wipe our three members of one family."
The Basnetts leave behind three adult children aged in their 20s and 30s and several grandchildren.
The couple's farm Nerragundah is at Oolong, about 10 kilometres from Gunning.
They were the 2016 Gunning Flock Ewe competition winners at last year's Gunning Show. The 2017 show is this Sunday.
Mr Koutsoufis said the deaths, which aren't being treated as suspicious, had affected surrounding farming communities and emergency service personnel.
"There is a wide-ranging impact when heartbreaking events such as this occur in rural towns," he said.
Emergency services called to the property on Thursday night have been offered counselling. http://www.news.co...d36e65e3418caef997