Would you? Well, ours is a sphere, I don't remember how we found out but it's not really obvious from the ground.

Hmm. Couldn't you see by looking out at the ocean? Unless it's very, very big...

Humans don't see as well, remember?

Vividly. The woman who has swimming clothes returns, at this point, and hands them quite proudly to Bella.

Thank you! Bella says, and she looks for some appropriately concealing plants to be tucked behind while she changes.

Luckily many of the trees in Lórien are quite old-growth.

And presently she is clad in appropriate fabric, jeans tucked under her arm and boots on enough that she can walk but step right out of them when they get to the water.

River's this way, says one of Miriel's attendants, and about half of them start walking over.

The river is delightful. We can ask it to be a different temperature if we'd like, Rúmil says to her at one point.

This temperature's good. If it wasn't a river maybe it would be fun to turn it into a hot spring temporarily... How do you ask it?

Osanwë. It only works like this in the heart of the domains of the Valar. You just think about what would make the realm more blissful, think it at the realm itself, and it usually happens.

...Wow. How's that work? Is it intelligent? I don't feel a mind...

No, it's Lórien's ambient magic, it has some kind of instruction to make things pleasant for us that is at least a little responsive to what we want.

Neat! Does it only do temperature and things like that...?

I've never tried other things.

And the river starts fizzing! Just a little bit at first, but as this is met with delight and astonishment and joy, it gets steadily fizzier!

She cackles.

Everyone else is pretty delighted too. Then one of them turns it purple.

She laughs harder and sees if she can get it to throw rainbows.

It can! And it can do bubbles, and they can get quite foamy -

Well, this is the most fun Bella has ever had swimming in her life. Can it be such that it's comfortable to open her eyes underwater?

That one takes a while, and some teaching the river what makes that comfortable, but then, oh, yes, it can, and it's marvelous!

Cool! What's on the bottom?