This bad Latin can be translated like so: Descend into the crater of Snæfellsjökull, which the shadow of Scartaris caresses before the First of July, brave traveler, and you will reach the center of the earth. I have done so myself. Arne Saknussemm.
"Stand by the grey stone when the thrush knocks, and the setting sun with the last light of Durin’s Day will shine upon the key-hole.”
(JRR Tolkien's "The Hobbit")
