A constellation.

Could you be more specific. What is it's translation and what constellation is it called today?

Certainly
 

It means "eagle of the west", and, although Tolkien never positively identified it, it has been suggested that Soronumë is the constellation Aquila.

Muy bueno!!! Your go :D

By which river did Nulukkizdîn lay?

The Narog.

Yep, your turn.

Thank you
 

The "Fragrant Trees" were by the mouth of what river?

Welcome back, sir!
 

Nísinen.

Nunduinë

Ach! Ja!
 

Nísinen was a bloody lake!

*bangs head on random flat surface*

Thanks for the welcome, Nil.
Close, but Joy has it.

Where was Nienor ensnared by Glaurung and what river is it near?

Amon Ethir the Hill of Spies near, once again, the Narog. :)

Very good!!

If I leave The Floating Log and travel in a straight line to Brandy Hall, what rivers would I have to cross?

The River Brandywine (of course)
and possibly The Stockbrook, depending on how straight you can walk :p

Spot on, good Iaurhirwen!

What are the two other names for each of these mountains:

Redhorn
Silvertine
Cloudyhead

Caradhras and Barazinbar
Celebdil and Zirakzigil
Fanuidhol and Bundushathûr

From what I can remember, you are correct. However, I'm in the process of packing for college and regretfully my copy is LOTR is now occupying space at the bottom of my trunk and I am unable to confirm without a doubt your answer.

I strongly believe that you are correct. So I say go ahead and post the next question. I really can't wait until Monday and I can get everything set up again.

Thanks!
 

Name an island named after a person.

Tol Morwen?

Yep
 

Your turn, NightKnight.

Which mountain range was between the Red Mountains and the Yellow Mountains?

Ah, a tricksy question
 

The Mountains of the World, I think is the answer.

Nope.

Gah!
 

Mountains of the Wind! Karen Wynn Fonstad has deceived me!

Yep. Your turn. :)

Thanks
 

What was the most populous region of Numenor?

Guessing.
 

Arandor?

Aye, Nilp, you got it.

Thanks!
 

What is the name of the stream that flowed near Húrin's home?

Nen Lalaith.

So it is.
 

Back to you. :)

Thanks
 

Which two rivers' confluence created an inland delta?

The River Limlight/Snowbourn depending on who you are talking to and the River Entwash

One of those I was thinking of.

Wow, what a mental block that was. Sorry it's the Entwash and the Anduin. That's what I get after being awake for 20 hours and just walking over 10 miles in a stupid scavenger hunt. I swear they just live to torment us freshmen.

Yep, that's it. Iaurhirwen got it.