The site is expected to be fully restored in 2020.
The Marwell Tar Pit remediation project in the Whitehorse area is now approximately one-quarter completed.
The pit has become a dumping ground for over 70 years, and was previously used as an oil refinery and became used as a place to store waste tar after 1945.
The cleanup project is expected to cost a total 6.8 millions dollars, with the majority being federally funded.
Half a dozen workers are currently working on the restoration project now and the project is expected to be completed in 2020.

BC man convicted of manslaughter
Hamilton Boulevard trail cleared as winter pilot project wraps up
Yukon RCMP roll out new navy-blue uniform shirts
Yukon releases final flood maps for Dawson, Klondike Valley, Upper Liard
Inquest into the death of Manui Roux to be held in Whitehorse
Yukon municipalities to receive record $30 million in funding
Yukon expands winter electricity relief for residents
Ross River Dena Council says 'no' to proposed mining on its traditional territory
LSCFN stands firm: 'No mining in the Breadbasket'
Yukon Government accepts responsibility for abuse at Jack Hulland Elementary
Whistle Bend road connector project gets $8.7M boost from federal government
Yukon Government signs deal with Alliance Health for primary care clinic
Man Missing in Whitehorse: Reuben van Klaveren Sought by RCMP
Yukon Government passes health authority act amendment amidst first nations concerns
Selkirk First Nation announces election results
Carcross/Tagish First Nation cuts community safety services amid funding shortfall
Yukon First Nations Outraged Over Clean Energy Act Repeal
The Yukon Employees’ Union is weighing in on the Health Authority Act’s uncertain future
The Village of Haines Junction has announced the launch of a new grant program
Yukon's air ambulance program gets upgrade