Ok then I assume that transitions between a flat and an elevated block aren't allowed either:

yep, the lower block is definitely flat. So you have to find a different solution for that.
You might want to try out yoshi's embeddable extension pack for canyon, it has quite a fitting block for that case

But custom objects make this theme too easy

But I cannot and don't want to change the rules 1 week after the theme has begun.
And you're quite an experienced mapper, but for others it is for sure harder

Of course not, I'll just take it as a challenge (to build an entry with lack of objects)

I tried to steer away from custom objects too, but I did end up using a few

How do we say to someone he didn't respect the theme ?
I tried Chrispy's map and i counted no less than 25 flat blocks directly on the path :3

I will look through all the maps at the end.
But it would be very nice and fair to notice others about wrongly used blocks.

Yes I drove Chrispys map too and I have to say, that you took the wrong path then. All blocks I drove over were valid

Ah yeah my bad, i did not check the gps

Finished building It feels so good to finally be back in an MTC I forgot how much I missed these crazy challenges Thanks again Haenry for keeping the MTC alive!