Since they didn't move, the monsters didn't attack them. Which was weird since the lizards could swim in the lava. In any case, while Zane had no idea how Yolanda did that, she made a pair of rough boots using the monster's hide and without the need for a needle or lines. It wasn't comfortable and quite slimy, and it was quite… slimy… but it offered ten extra points in endurance and mentality and increased his Fire and Heat Resistance by thirty levels.
After getting those, Zane installed the other parts of the hide on the wheels of the vehicle… it had been very tiresome. Still, the result had been more than satisfactory since they couldn't feel the toughness of the ground anymore while moving.