Construction has stalled today due a gas leak on site.
"A gas leak occurred during the construction of a new roller coaster in Walibi Holland. The amusement park has been working since last autumn on the more than 36 meters high rollercoaster Untamed, which is planned to open on July 1st. A gas pipeline was hit during excavation work this morning. This was confirmed by a Gasunie spokesperson. For the time being the construction of the roller coaster is stopped. How long the recovery will take is not yet clear. "That depends on the approach chosen on site by our technicians, but you will not solve that in a few hours," says the information officer.
The repair is complicated because the gas supply to Biddinghuizen is not closed. "But the situation is completely safe," the spokesperson emphasizes. "The fire brigade has shut down the entire area and the gas supply continues as usual, and we are now looking at how the problem can be solved."
Source