[4] The hot water found is used in a local geothermal spa a few kilometres south of the tunnel.

Adding to the problems, a large volume of hot water was also found and needed to be pumped out of the tunnel.

[5] After the utility connections had been constructed, in 2022 a geothermal spa called 'Forest Lagoon' opened, located a few kilometers south of the tunnel in Eyjarfjarðarsveit.

Users either register on their website and pay, or, after 24 hours the toll is invoiced to the owner through their vehicle registration plate, incurring a collection fee of 550 ISK.

Opponents of the project said the project would not be profitable within a reasonable span of time (if at all), the construction costs would exceed original estimates and the motivation behind the construction would be to benefit the voting demographic in the marginal constituency in which it was located.

[18] This was controversial as tourists and non-regular users were unaware of the system, and was later reduced to 400 ISK and grace period increased to 24 hours.