Ridges on the Moon's Surface

It's unscrambling, and the word is apparently: srliel unscrambled.

Thanks!

Could be "rilles", although these are not ridges but depressions that look a bit like river channels. I seem to remember reading somewhere that they're actually lava tubes that have lost their roof.

Probably "rilles," though these are actually grooves or channels in the Moon's surface, properly called rima (singular) and "rimae (plural) in Latin. True ridges are actually called "ridges" in English, or dorsum (singular) and dorsa (plural) in Latin.

''Ribbed for our pleasure''

or ''rilles'' for the scramblers....