Trouble sourcing oil leak

Well I have a fairly major oil leak on my 340 s/b. I thought it was the rear main seal and was dreading it!! Well I had a bit of time tonight so I crawled under the car and had a closer look....the oil is coming from mucher high but pouring down the back and side of the block Oil filter side).

It seems to be coming from up top near where the distributor is loacated. It is below there but in that same area. Sort of where the intake meets the block. It is very hard to see but definitely coming from that general area.

Anyone have any thoughts? I know my description is vague and I wish I had pics but all I had was my cell and the pics aren't usable.

Is there something up in that area that makes sense as a spot to trouble shoot? I haven't pulled the distributor/cap out of the way yet. I am hoping that area is supposed to have a hose or plug that may be shot and not something more major!

Any thoughts are greatly appreciated and I will try to get a pic tomorrow but it is hard to see the area because of the heater hoses, distributor, electronic ignition etc that obscure the view.

Thanks in advance,
Dennis