Moments later of Sophie and Marcus observed how big amounts of 'asteroids' were for impact soon against the nearby, suddenly, all the ground started moving. This sudden earthquake made them four be interrupted from their focus, for be focused on the very soon threat they were going to deal with.
After few intense seconds where Joe was struggling to swallow his saliva, as was feeling some sort of boss of those disgusting bugs was for appear, and his instinct wasn't wrong.
From a sudden, few meters away from their 'base', or their settlement as was for now; a massive hole was formed from the inside the ground, as a huge scale worm with much more than hundred feet that each of them was sharp as a dagger or arrow, went out of the ground forming such hole.