Is this contrail from an airplane or a rocket? A relative of mine showed me the following picture that she took on the 11th of April, around 8 to 8:30 pm in the Netherlands somewhere near "Leiden" pretty close to Schiphol airport (unfortunately I do not know the direction she was looking at, or the exact location, nor does she remember).



This relative thinks that what is shown in this picture is a rocket ascending due to the steep vertical incline. I however doubt this and rather believe it is a plane flying towards the photographer. The illusion of it ascending steeply being caused by the shadow of the earth falling close to the "plane" while the distant contrail is still in sunlight due to the height at which a plane flies, creating a fake depth effect.

What makes me doubt my theory however is the (to me seemingly) irregularly shaped contrail at the end which look like the plane did some weird zigzagging (or a very strange wind blowing it like that), and it seemingly "just appearing" out of nowhere

Now we both don't know a lot about airplanes, so I was wondering if by looking at these contrails it is possible to confirm or deny that this is caused by an airplane. 

Looking at the flightradar for that moment there appears to only have been one plane in the area, and even that appears to be quite far out. Could this plane possibly have left those contrails?
I am pretty sure it is an aircraft. 

When aircraft fly straight towards you they can appear like rockets. The contrail is distorted by winds in the upper airspace. Yesterday there were a lot of cirrus fibratus and cirrus uncinus in the upper atmosphere (at least above Frankfurt, and we are in the same weather system at the moment), and when aircraft fly through them the contrails typically wobble like in your picture. 



Now, which aircraft was it? 

The aircraft visible on the picture is not flying in sunlight anymore, but most of its contrail still is. It also just made a turn. 

On the eleventh of April, sunset in Leiden was at 20:33 local time (18:33 UTC), setting in a bearing of 285 degrees. 

Flightradar24 show this DHL Airbus A330 descending from FL 390. I would estimate that this picture was taken at 20:36 local time, perhaps a bit later. The turn is clearly visible on the picture and on FR24. The contrail matches that of a large twin engine. (my first guess was a 777, an A330 has a similar contrail. It is definitely not a 747).



A comparison picture created by ymb1 shows the shadow/lighted parts of the contrail highlighted, contrasted with the terminator on the map.