Yes Doug...I agree...But I prefer this part...

'The name was partly taken from a poem by the American poet Edgar Alan Poe that seemed particularly relevant to our current strategic situation with the rover. But I also got the sense that Ultreya had become something of a symbol of hope for future exploration for you and for others in the Internet community. And El Dorado is a name that I intended to be similar in its implications.'

El Dorado
by Edgar Allan Poe
(1849)

Gaily bedight,
A gallant knight,
In sunshine and in shadow,
Had journeyed long,
Singing a song,
In search of Eldorado.

But he grew old-
This knight so bold-
And o'er his heart a shadow
Fell as he found
No spot of ground
That looked like Eldorado.

And, as his strength
Failed him at length,
He met a pilgrim shadow-
"Shadow," said he,
"Where can it be-
This land of Eldorado?"

"Over the Mountains
Of the Moon,
Down the Valley of the Shadow,
Ride, boldly ride,"
The shade replied-
"If you seek for Eldorado!"

'To me, that sounded very similar to the meaning that you've ascribed to Ultreya.'

This is what I'll ear when I remember the ABYSS??