There was nothing in these caverns to mark the difference between night and day, and the Kalevide did not know how long he had been struggling against the various difficulties of the road. He was now assailed by swarms of mosquitoes, which he thought to escape by hurrying through them and leaving them behind; but they grew [Pg 126] thicker and thicker, till a cricket in the grass called to him to sound the bell. The mosquitoes vanished as if carried away by the wind, and the hero sat down to rest and refresh himself, and having at length learned wisdom from experience, tied the bell on his little finger, that he might have its constant aid in future. Then he advanced farther. And now the hosts of hell, the servants of Sarvik, heard his heavy tread, and they sent out scouts, who fled back in consternation, reporting that the son of Kalev, the strongest of men, was advancing with hostile intentions. Then Sarvik commanded his forces to march against him. The Kalevide had now reached a river of blazing pitch, crossed by an iron bridge. Here the hosts of hell determined to make a stand, and formed themselves into four detachments, one upon the bridge, one below, one on the bank, and one in the rear. "What's this swarm of frogs?" cried the Kalevide, drawing his sword and rushing forward to the bridge. He was at once assailed with a shower of arrows, and was then attacked with spear and battleaxe; but he stood like a wall of [Pg 127] iron, and scattered his enemies, though fresh hosts continually advanced against him. At length he fought his way through all the hostile troops, and Sarvik was in despair, and did his utmost to block the paths and to fortify himself against the imminent danger.