Yes, there is a fence in there somewhere.  A split rail type. 

And it's covered with 2x4 welded wire too. 

Here's the starting point up by the driveway.  The iron fence goes across the end of the driveway and the wooden fence goes down the backyard along the property line.  This post has rotted off, as had many.

The other end is down at the back of the yard. 

This side is 60 feet long, going downhill.

Here be mosquitoes.

Here you can see the 2x4 welded wire stapled to the split rail.

It all had to come out.

 Some posts were rotted off, others I just broke off.

The one corner post was solid, and I wanted to use the same hole, so I raised it out using my hydraulic jack.  Luckily, it had not been set in cement.

And behind these cedar trees is another 86 feet across the back yard to be done.

Peter and Monica decided on an 'acorn' style picket, 42" tall.  They chose this sample I found on the internet. 3.5" wide pickets, spaced 2.5" apart.

So I made up a template.

And made up some samples for their approval.

They liked them.  So Its onward and upward.

I started by taking out all the old stuff.

Sue and I then got the side yard posts in place.  I handled the one person auger while Sue plumbed each post.  We used the quick setting premixed cement.  We poured the mix dry into each hole and then poured in some water.  It worked very well and each post is rock solid.

The 60' run took nine posts spaced about 7' 6" apart.  I used 10' 4x4s cut in half to make the five foot posts sunk 18" into the ground (24" for the first and last ones).  Later I'll cut them all off at an even 37" above the ground.

The next day we added the 2x4 rails at one and three feet above ground level. The yard on the right here belongs to the neighbor, who has given permission for us to work here. Peter and Monica's yard is to the left where there are a lot of bushes in the way.

It's starting to look like a fence!  I did have to trim the bushes back a bit to make some room.

Next up are the acorn pickets, all 120 of them. 

We will be spending a weekend in the shop making them.

We picked up 150 1"x4"x8' pressure treated boards from the local Home Depot, who treated us very badly during the whole process. 

Originally there were ten rows of fifteen and the truck was setting pretty low.

Sue handled the miter saw and converted the 150 boards into 300 42" long pickets.

I took 120 of those boards and made them into the

acorn style pickets using a template and router.