That day, Legolas and Tauriel had left their horse and scramble up a rocky outcrop. The two woodland elves crouch behind some rocks at the top and see a fortress ahead.
"Gundabad. What lies beyond?" Tauriel asked quietly.
"An old enemy - The ancient kingdom of Angmar." Legolas explained about Gundabad. "This fortress was once its stronghold. It is where they kept their great armories, forged their weapons of war."
Suddenly, a light flickers in a window of the fortress, then disappears.
"A light! I saw movement." Tauriel said, seeing the flickering light.
"We wait for the cover of night." Legolas said cautiously. "It is a fell place, Tauriel. In another age our people waged war on those lands." He paused for a moment and looked like he was in terrible pain. "My mother died there. My father does not speak of it. There is no grave, no memory, nothing."
Waiting for a few hours, Legolas and Tauriel kept quiet.
"If we are going in - we should move now." Tauriel decided.
Suddenly, massive bats being screeching and flying around.
"Dúilith secherig." (They are swarming.) Tauriel panicked in elvish.
"These bats are bred for one purpose." Legolas said, staring at the bats.
"For what?" Tauriel asked.
"For war." Legolas answered.
As the bats swarm overhead, a figure rides out on a Warg. The figure was revealed to be Bolg, who was dressed for battle. He raises his mace and shouts out a command. By his command, the trumpets were blown, and the gates in the bottom of the fortress open, releasing rank upon rank of massive Gundabad Orcs, each with a giant spear at least three times longer than the orcs' height.
The massive army of Gundabad Orcs begin to march away, with the bats following and wheeling overhead.
"Din methithar i phain." (We must warn the others.) Tauriel warned in elvish.
"Penim lû. Tolo!" (We may be too late - hurry!) Legolas beckoned in elvish.
As Bolg yells out a command, hundreds of small and lighter Gundabad Orcs emerge out of the marching army and charge ahead towards the direction of Erebor with the bats.