Meteor Crater or Volcanic Crater?

Meng Chao and the exploration team set up a ring of firepower positions near the Teleportation Portal, combining them into a small Jungle Fortress.

They also buried large numbers of mines outside the fortress.

Last time, one of Lü Siya's squads had mysteriously vanished behind a minefield.

This time, besides mines, they installed a large number of delayed-detonation Crystals Bombs.

These bombs required humans to transmit a safety signal at regular intervals to keep postponing their detonation.

Should anything happen to the humans, the bombs would automatically explode, releasing smoke generated by the friction of massive quantities of crystal powder, providing the artillery formations dozens of kilometers away with the most conspicuous fire guidance.

After completing all this, Long Feijun and Meng Chao selected a group of the most elite explorers and set off carrying nearly a hundred "Bread Crabs" and "Peregrine Falcons."

Because the "Piranha" squad and Lü Siya's squad had already mapped out most of the terrain within the Mist Hidden Forbidden Zone and left behind numerous markers containing special radiation.

The third wave of explorers advanced very smoothly. They neither lost their way in Space Fissures nor encountered any vicious monsters.

The "green tide" on both sides of the mountain path lay as still as if asleep, turning a blind eye to the "invaders."

Only a deathly silence remained, like an icy scalpel endlessly scraping across everyone's cerebral cortex.

Especially now that all ten exploration teams were approaching the Heavenly Pit from different directions, the unease in Meng Chao's and Long Feijun's hearts grew even stronger.

"Senior Brother Long, don't you think things are going a little too smoothly?"

Meng Chao finally could not help whispering, "If this really is a 'natural laboratory,' then the mastermind behind the Monster Civilization should at least have stationed some eyes