It was very wise for you to remain cautious of that rustling. The disappearance of the first shield was worrisome, but surely the second shield you casted would be enough to protect you from whatever may come your way. Though, still, nothing comes of it. Nothing is jumping out at you. Perhaps it was just another streeler?
Are you staying cool enough though? The heat and humidity still linger. It doesn't even look like you had casted the water-making spell moments ago. Of course, you can go on several more minutes without water. Maybe there is a more permanent way you can keep your cool?
It was an excellent idea to conjure Fianto Duri. The shield casted between you and the forest is kept alive with this combination, allowing you to examine the door without having to focus on the shield. Hopefully that shield is big enough should anything decide to make an appearance.
When you turn your attention back to the door, you quickly notice that there is a two-lined Runic message etched along its edges.
The first line reads:
ᚦᛁᛋ ᛞᛟᚱ ᚱᛖᛗᚨᚾᛋ ᚲᛚᛟᛋᛞ ᚹᛇᛚ ᚦ ᛋᚾᚨᚲ ᚱᛟᛗᛋ ᚠᚱᛖ
Could this possibly be the answer to opening the cherry-stained door? Well, there's only one way to find out. Hopefully you've at least mastered the basics of the runic alphabet.