I have seen holding patterns in which the direction for entering the pattern is opposite to the one of the pattern itself. It's not clear to me how is the pattern supposed to be flown into. Here's a picture of a holding pattern illustrating my question:
If there's an aircraft holding initially, what is the risk of another plane flying into the pattern head on with the plane previously holding? My guess is that this doesn't happen, but instead the way of entering the pattern is to first deviate from the path shown in the chart, and merge with the "downwind" leg in the correct pattern direction (Not fly direct to the intersection). Is this right? Thanks in advance.