Finally, I am on leave from work and I can make some progress on the rear retaining wall. Here are some progress pics:
BELOW: The 550 blocks, ALL to be carried down the site...

BELOW: The staircase corner stones...

BELOW: Along the back area, will end up at 5 courses high...

BELOW: Another progress pic...

BELOW: Up to 3 courses here...

BELOW: Where the staircase will be located...

BELOW: Along the back of the pool area...
More pics will be posted as progress is made.
John & Tarin.