nope

 What is there a see through, like, invisible hill just on top of it?

 nope just the start on top of the hill

 is this the technically challnging part?

 everything was pretty challenging,it has tight twisty turns(not seen on the picture),stair of tree logs witch was fairly steep and rougth,roadgap and some nice off camber sections,drops with logs as a landing zone.

 I doubt you seriously, a 40m hill cannot possibly have a steep section without the track being 16 seconds long. Upon looking at the logs, those arent steep bro, if you think those are steep, dont go to schladming, serious.

 the course was like 270m long and the log section was in real life steeper than on the picture.O well pictures can be deciving.It was fun through

 270 metres. How were you tired, possibly, that means the push up wasnt steep at all, you need to hit the gym.

 its called nerves. happens to most people, halfway through any run you feel like you've just died even though you were running the course fine through practice. Nerves probably got the best of him.

 Let me tell you.. we live in a flat country.. this is one of the highest hills.. LOL
Seriously tho, we have to deal with it unfortunately

That's why I do street and some dirt, but even dirt tracks are rare in Holland..

Wish I could do downhill but I don't want to spend so much money and time on traveling to the Alps or maybe a bit lower things like parks in Germany. I'm kinda jaleous tho on those american kids of 14 years old having a DH bike and can do anything in their backyard :/