https://www.facebook.com/michiel.hegener/posts/10155784880591972
It is almost certain that Anne was attacked near Den Dolder. It is there that we need to look for her and not at Huis ter Heide.
I reach this conclusion as follows:
If you combine the images from the weather radar archive with the satellite photo of the area where at 19:30 the last contact of her phone with the network took place, and if you assume that she cycled at 14 km/h (his speed between Hollandse Rading and Baarn), you can see that, just when the weather started to pour, she was approaching the ecoduct (*) over the railway line, a good hiding place. The cycle path continues under the ecoduct, parallel to the track.
(The time of the last contact was given as 19:30 hours, according to De Telegraaf of 7 October it was 19:28 hours. This hardly makes any difference for this analysis, partly because the cycling speed of 14 km/h is not fixed. Maybe she was riding a bit slower because she was tired after 2.5 hours of cycling, maybe a bit faster because she wanted to be in the inhabited world quickly.
At 19:47 o' clock, her phone didn't work anymore (a whatsapp to her wasn't received), so between 19:30 and 19:47, something must have happened just when she might have been hiding under the ecoduct.
Was there perhaps another hiker or cyclist who was hiding there?
As I see it now: after the attack on her, in the vicinity of the ecoduct, the perpetrator went off on her bike and with her jacket and rucksack. 5 km away (in Huis ter Heide) he threw her bike into the water in the hope that it would never be found, he threw the coat in the bushes by a path in the hope that it would be found and that the police would search in the wrong area, the backpack idem in another, nearby place.
An additional point of consideration is that, if she had reached Den Dolder, Anne would almost certainly have taken the train to Utrecht there because it was raining cats and dogs and because it was quickly getting dark. From Den Dolder to her house in Utrecht was still 10 kilometres so three quarters of an hour of cycling.
And another point: she was, see my maps, around 19:40 in Den Dolder centre if nothing had happened and if she lost no time hiding from the downpour. At 19:47 her phone didn't work anymore, so before 19:47 something must have happened. If she had been cycling 14 km/h from Den Dolder towards Huis ter Heide at 14 km/h, she was at 19:47 a further two kilometres from Huis ter Heide, the place where her bike, jacket and rucksack were found. And if she had taken shelter from the downpour, she would have been at 19:47, at 3 to 5 kilometres from Huis ter Heide.
In other words, it is almost impossible for her to have something happening to her in Huise ter Heide, as the police apparently suspects.
Alternatively, her phone didn't stop functioning because of what happened to her (attacker turned it off or trampled it to pieces) but because the battery was at its end. This means that she left with an almost empty battery. Very unlikely. But if an empty battery has been the cause, she may have arrived to Heide House by bicycle.
And finally-1: From NS Railway Station Den Dolder (that she passed) to Utrecht (Berenkuil) is 9.6 km via Bilthoven and 11.6 via Huis ter Heide. Suppose she wanted to go home by bicycle, and not by train, did she go in the dark and in terrible weather with a detour via Huis ter Heide? Asking the question is the answer.
Finally, a point of great importance for the analysis: Could it be that something happened to her before 19:30?
This would mean that her attacker struck between Baarn, where she sent a selfie at 18:50 and the point where her phone was last detected at 19:28 or 19:30 hrs.
Then he went off there with phone, bicycle, jacket and backpack to Huis ter Heide.
At 19:30 o' clock or 19:28 o' clock he would have crossed the point of the last network ping.
However, the distance from the point of the selfie and the point of last network contact is 8880 meters and Anne's phone took 38 or 40 minutes. At 38 minutes this is exactly 14 km per hour, which is exactly the same as her speed between Hollandse Rading and Baarn.
Conclusion: before 19:30 p. m. (or 19:28 pm), nothing happened to Anne because her phone passed the point of the last network contact exactly at the expected moment.
