Well, I can't do chords, but here's the lyrics:

'Til The Mountains Disappear
Lyrics by Paul Overstreet and Don Schlitz

Well I have walked with my arm around your shoulder
And I've placed a golden ring upon your hand
Now my heart is telling me I should be bolder
And take you to the highest place that you have ever been
And say it all again

I'll pledge my love to you on top of a mountain
And I'll say it loud enough for all the world to hear
We'll let it echo through the deepest darkest canyons
And I will be your companion 'til the mountains disappear

Now the seasons will change down in the valley
Like the heart of a fair weather friend
But if ever for one moment you should doubt me
Then I will just start climbing through the snow and through the wind
And say it all again

I'll pledge my love to you on top of a mountain
And I'll say it loud enough for all the world to hear
We'll let it echo through the deepest, darkest canyons
And I will be your companion 'til the mountains disappear

I'll pledge my love to you on top of a mountain
And I'll say it loud enough for all the world to hear
We'll let it echo through the deepest, darkest canyons
And I'll be your companion 'til the mountains disappear

Yes, I'll be your companion 'til the mountains disappear

Listen here: https://www.youtube.com/watch?v=DczZBgCJuPs

Here's one with chords on screen as the video goes: https://play.riffstation.com/?v=DczZBgCJuPs

If you need to, someone can write them down on a set of lyrics.