Describe the emotional state that Axel and the Professor were in as they walked around their new surroundings in Ch 40?

Lidenbrock expostulates on what a remarkable find the exploration party has just made. He is excited and reinvigorated by the discovery. Axel is also enthusiastic, the delight of discovery rekindled in his breast. He tells his uncle how lucky they are that the storm sent them back here, because otherwise they never would have been put back on Saknussemm’s trail.

The men return to the raft and set sail once more, landing on the shore near a dark tunnel. After disembarking, they enter. Unfortunately, there is a large rock blocking their way; since it could not have been there during Saknussemm’s time, it clearly came from some sort of earthquake in the intervening centuries.

Axel is determined, he will not give up the quest and feverishly suggests using the powder to blow up the opening. This course of action is agreed upon.