This was because safety for the entire team could not be guaranteed.
The unfortunate cancellation meant that shooting needed to be done elsewhere to make up for this. It was then decided that 1N2D will take a 3N4D tour along the coastline of Korea starting from Sokcho in the east and moving through Gyeongsang-do, Jeolla-do, etc before reaching the west coast. This special trip which was completed last week will be divided into 4 episodes to be broadcasted over the next month.
This will be a good spring break for the 1N2D cast and production team as filming will only resume in mid-April.