Ericksen told news.com.au that she watched the fires develop on Saturday with more than 40 fire trucks, three aircraft and three helicopters working on it from just after 9am.
She said the hill was covered by smoke from other areas during the day so the fires were not clear until after the sun set.
"I took the image at 9.45pm after the strong wind change had come through," she said.
"Balmattum Hill is a place I have walked all my life and it appeared to be covered in lava under the darkness.
BEGA: pic taken on iPhone using the ‘National Crisis’ filter... by that I mean no filter just so much smoke and ash that it’s dark as night at 11am @9NewsAUS#nswfirespic.twitter.com/X9WadWwGtV
"Our emergency services did an incredible job containing the fire and preventing any loss of houses."
At least 60 homes destroyed in NSW
RFS deputy commissioner Rob Rogers says at least 60 homes have been lost in the fires in NSW over the weekend.
"We haven't been able to get a lot of aircraft off the ground today but I can confirm there is confirmed 60 homes but we know there is more," he told ABC.
"We know there is a significant damage to infrastructure in the Snowy area and we also know that there are communities like Batlow that have been extremely hard-hit.
"We really have to get in there and have a good look at everything that has been damaged and we are also aware of significant impact to livestock in the area."
Some relatively oppressive smoke at my parents place in Wagga Wagga, ~50 kms from the active fire front of the Dunns Road fire. NSWRFS did an amazing job at Batlow, Adelong and Talbingo overnight to save most of the homes. Hoping conditions ease soon! #NSWfirespic.twitter.com/zv5pfQd7rW
Deputy Commissioner Rogers said the fire had not reached Eden on the NSW south coast, which had earlier been subject to an emergency alert that was later downgraded to watch and act.
The town had been bathed in an eerie red and dark orange light as the fire got closer. Residents were advised to get "in a safe place".
The Voyager Point fire in Liverpool continues to burn in bushland west of the Georges River. #FRNSW and #NSWRFS crews remain in the area working to contain the fire. Currently there is no threat to homes in the area. pic.twitter.com/EhWfb660oF
"We are watching the fire and if the situation changes we will advise the community," he said.
My best friend in south west Sydney just evacuated her home with her two young children due to the fire across the river at Voyager Point. Terrifying for everyone involved. God bless the firefighters and all who have done their bit to help with donations, food, & water thus far. pic.twitter.com/p02nzuBaJo
"There is an enormous amount of fire in that part of the world and these aren't going to go for some time and we have been dealing with these fires non-stop now for more than five months and I can't see that changing."
Across the state 146 fires are still burning and Deputy Commissioner Rogers said there were a lot of uncontained fires in the south of the state.
"We have a solid line of fire all the way from Batemans Bay all the way up to the Bundanoon area."
Deputy Commissioner Rogers said there was also a fire below the Blue Mountains that crews were trying to contain.
John Howard says fires are 'different'
Former prime minister John Howard has said he believes this year's fires are different.