Since it was too impractical to move those steel containers, Leon used all the mana liquid in those to defeat the elemental golems and practice Haste. He only used the purple crystal to see the other world after twelve hours, Darya stayed behind because she was tired.
Still, there wasn't much to see on the other side. Leon got attacked by several mystical golems, but he managed to escape from them flying to the sky. If Leon had to describe that world, he would use the word Pandemonium. In one direction, he couldn't see anything, but ice, on the other only volcanoes and magma. On the different directions, he saw a wasteland and then a seemingly endless mountain range where rain clouds were constantly letting lightning bolts hit the ground. It was a weird world with weird ecosystems...
Leon managed to return using Mana Concealment. The golems didn't have eyes. So thanks to that skill, they couldn't notice Leon... like many other monsters, they used their target's mana to find them.