Where the Spirit Fire Globe finally disappeared, it was an area still filled with dense clusters of icicles. Just how large was the place, none of them knew and if they would be able to pass through that area within a relatively short period of time it wouldn't be that bad, but if it turned out to be an overwhelmingly long stretch, the time they would need to get through it would be exponentially increased in folds.
Afterall, the spaces in between the icicles were tiny and they would need to watch carefully before they took every single step, which would greatly drag out the speed they would be able to progress.
When the period of time is dragged out, the high anxiety and nerves would bring about exhaustion and fatigue and if they lost their concentration even for a moment, they might very well fall prey to the icicles.