What is this hole on the side of the motor?

Can anyone identify the hole in the middle of this picture? It had an oily and sticky substance coming out of it this morning went I got the bike out for a ride. It almost seemed like a mix of oil and antifreeze. Coolant is bit low but oil was full. I changed the oil and it was clean, no contamination and the same with the coolant.
Anyone have any ideas?
Thanks for any advice!

Rob

 

Added circle around hole to be easier to see.

 

That is a drain hole for accumulated gunk that forms between the "V" to escape from

The fact that Gunk is running out would indicate you may have a small weep or leak of both coolant and or oil that will need to be sorted

The end of the coolant hoses may need the hose clamps tightening or maybe a gasket is weeping

Best to get in there and clean it up and then run the bike for a while to see exactly where it is coming from

 

I searched through the service manual trying to find that hole. A couple pictures showed the hole but no mention made of its purpose. Thanks Grump.

 

Thanks Grumpy and Randy! Not that the build up there is a good thing but it is much better than the alternatives. After further consideration, I think the hole must have been plugged as there was also a lot of dirt in there. Completely dry today.