How to construct a wood-timber retaining wall with This Old House landscaping contractor Roger Cook. | thisoldhouse.com
Tranquil Earth - Building Gardens with Railway Sleepers
I like the stairs here...fill in with wood (rather than gravel or something else)
photos of increasing wood retaining walls
inexpensive but really effective- sleeper construction raised garden beds
how to build a wood retaining wall | wooden retaining walls constructed from high quality wood can stand ...
Leone Landscape and Construction | High-End Landscape in Watertown and West Newton, Massachusetts | Boston Design Guide
Put bug hotels in raised bed walls instead of gabions.
Retaining walls. Wish I'd known all this when I built my raised veggie beds, as we're on a slope...but looks like I got the basics right.
low gabion retaining wall construction, 600mm tall gabions http://www.gabion1.co.uk