Construction workers working on the new tunnel Vaðlaheiðagöng between Akureyri and Húsavík, Northeast Iceland, have been working bare chested in the middle of the Icelandic winter, 641.is reports.
The day before yesterday, they hit an aquifer, which is now spewing 250 to 300 liters of water per second of 46°C (115°F) hot water into the tunnel.
Cold water has had to be sprayed on the workers as they worked in the hot conditions in the tunnel.
One fourth of the 8 km (5 miles) long tunnel is now ready.
The gushing hot water is expected to cause slight delays in the project.