The moment Uriel was grabbed by the gigantic rock golem he felt a wave of relief as he finally had an excuse to send the students away and explore the dungeon on his own. Though his relief lasted only until the rock like creature opened its maw and swallowed him whole.
Cryptid's internal organs didn't necessarily resemble those of humans and instead of a digestive tube, Uriel found himself in a claustrophobicly small rock chamber where the only exit was similar to a meat grinder. Sharp rocks spun around an axis at a speed so fast it could shred a hunter into a pulp within seconds.
Thankfully for Uriel, his Dash skill allowed him not just fast movement but also an enhanced perception of time which gave him the chance to think of possible solutions. The first thing he did was to jab the Red thread of fate on the interior to keep himself from getting swallowed into the meat grinder organ of the cryptid.