what might be the problem of my profile

[bigexploit]

i create a profile from a surface, it refuse to draw in horizontally(along stations) instead vertically

[Jeff_M]

For one, there are a number of Points with an elevation of 0. Set your EG point group to exclude points with elevations <1000 and it gets better. 

Next, that is extremely steep terrain....slopes of 20%-900%, is this correct?

[Jay_B]

Jeff's quicker than I but since I took a look I will also share what I found.

The Minimum & Maximum surface elevations can be viewed in Surface Properties and you've included zero elevation points in the surface definition as Jeff points out.

And when your EG Point Group is sorted by elevation, the zero elvations are easily found in the points listing.

Hope that Helps.

[bigexploit]

absolutly but does the deeply terrian has anything to do with that. please what other solution

[Jeff_M]

It drops 200+ meters in 8 meters in one spot check. So if this is really what it does, then the profile is correct (after excluding the 0 elevation points).