Story of Kiraat and Arjun

Arjun went towards north, cross Gandhmaadan Parvat, then Himvaan Parvat and came to a peak known as Indrakilaa and started worshipping Indra. Duryodhan also came to know that Arjun was worshipping Indra to get divine weapons and missiles. Indra appeared before Arjun and suggested him to please Shiv Jee first and ask for Paashupat Astra which will open the gates of Swarg to you, because to get divine weapons you will have to travel to Swarg." Arjun said - "As you say."

Arjun started Tap to please Shiv Jee. Shiv Jee got pleased but He wanted to destroy his Bhakt's pride first, so he sent one of His Gan to test him. That Gan changed his form to a  wild boar and started wandering there. Arjun saw it wandering so he shot an arrow at it and it got killed. When he went to bring his game, he found two arrows pierced in its body. He was thinking that whose arrow it could be, that he saw a Bheel (India's tribe who live in forest and live up on games only) coming towards him (He was Shiv Jee himself).

The Bheel said - "This is my game, because I have shot the arrow first, so I will take this game. This is mine." Arjun said - "When Arjun shoots an arrow then nobody else's arrow can reach it." Still Shiv didn't agree for it and it was decided to have a fight before anyone claimed the boar. Both fought bravely and fiercely. Arjun was surprised to see that his all arrows were going useless. Eventually his all weapons were finished. He was surprised to see this, it should not have happened. Then he took his sword and hit it on the head of the hunter Bheel, but it was equally ineffective, then he started fighting with his hands and legs. But all were ineffective and the hunter kept smiling. Arjun was upset at the thought that an ordinary hunter was better than him.

Then Arjun prayed Shankar in his mind. He made a garland of wild flowers grown there, made an image of Shiv Lingam, placed the garland on that and closing his eyes prayed him. When he opened his eyes, he found that the garland was not on Lingam but was on the head of hunter. He fell on his feet. 

Other Version
At last he got tired, he said - "Nobody else can take me to this condition except Shankar, Pitaamah and Drone. You are not Pitaamah, you are not Drone, it means you are only Shankar, Vaasudev also said to me "You are Nar, I am Naaraayan; I am in you and you are in me. Whatever is mine it is all yours."

Shiv Jee got pleased and appeared before him as Shiv Jee. Seeing this Arjun got surprised and fell on His feet. Shiv Jee said I was testing you before giving you anything. Ask for what you want to ask." Arjun said - "If you are pleased with me, please give me your Paashupat Astra." Shiv Jee gave him His Paashupat Astra happily and said to him - "In the hands of a bad man it can become a dangerous weapon, it can destroy the entire world. He taught him the incantations to send it and to withdraw it. Now you go to Indra, he is waiting for you and get divine weapons and missiles."

As Arjun had seen Shankar in person, he was overwhelmed with joy and was under a strange spell.

As Krishn said, He took Subhadraa to Dwaarakaa along with Him. She gave birth to a boy there, named Abhimanyu. She got busy in taking care of him.

Karn went to his victory tour and on return he brought several crowns. He offered them in the feet of Dhritraashtra.