Samuel began the climb back down the steps.
He hired yet another carriage to Whiterun. He pulled out a map Arngeir gave him and looked at Ustengrav. It was a quite a ways away on foot...he glanced at the stables and saw an unguarded horse. He sneaked around back and hopped into the stables, into a pile of horse dung. After cursing the gods for this misdeed, he made sure no one was looking, and hopped on the horse. He sped away before a guard saw him.
The nearest town to Ustengrav was Morthal, the capital of Hjaalmarch hold. Morthal is but a meager village, and the only real settlement in the entire hold. Jarl Igrod Ravencrone rules over it.
Samuel pulled out his sword while riding the horse, who was quite fast. He saw a troll, set it on fire, and lopped off its head. He spurred the horse when he made it to Ustengrav. Three bandits were fighting a mage, who then killed them all with a flame spell. Samuel killed the mage with the sparks spell. Ustengrav, from the outside, looked like a ten foot by ten foot circular hole in the ground, with steps leading to a door with runes on it. All of Jurgen Windcaller's comrades and family would also be buried here, draugr guarding him in death. Samuel tied up the horse, gulped, and opened the door to the tomb.
Bandits just couldn't leave a tomb alone, as Samuel soon discovered. When he came barging in there like a drunk walrus, the four bandits who were in there stood up and charged toward him, all of them carrying war hammers.
All the bandits flew backward...two of them unfortunately into the big fire they had made. Samuel shot the other two with his bow. He took the bandit's valuables and kept going onward.
Samuel noticed Ustengrav had a striking similarity to Bleak Falls Barrow. The deeper he went, the more the pesky draugr would try in vain to kill him. Finally, he made it to an unlocked wooden door with runes carved into it:
He quietly opened the door, preferring to keep the element of surprise. No one was in the depths, and it looked like no one had in a very long time. Waterfalls gushed from the walls and into pools in the ground, and Samuel was in in a precipice overlooking the sight. A stone stairway led down to another wall of runes like the one in Bleak Falls Barrow. He walked down the stairs, and a skeleton burst out of its coffin, armed with a bow, and Samuel killed it (again) easily. A claw pedestal sat on top of a coffin, presumably to hold the Horn. Samuel walked over to the wall of runes, on of the runes glowing white. A wind came from the rune and into Samuel. The runes turned to English, and it read:
Samuel ran over to the pedestal, which, instead of the Horn, held a letter. Two open coffins, which Samuel guessed had draugr in them to guard the horn, had dead draugr by them. He opened the letter. It read:
I need to speak with you. Urgently. Rent the attic room at the Sleeping Giant Inn in Riverwood, and I'll meet you.