Put the events in the correct order.

• Professor Lidenbrock and his nephew Axel decided to explore the area.
• Suddenly they heard a strange noise.
• The men hid behind some bushes.
• They saw a man and huge elephants.
• When they wanted to get back, Axel found a very old knife.
• Professor Lidenbrock thought it was Arne Saknussemm’s knife.
• The professor found Saknussemm’s initials on a cave wall.
• The men decided to find Hans and then come back.