What is the best - ,,landform'' for Locus.
I am using SRTM files with extension hgt ( this same as for Ozi Explorer). I don't know- my problem is becouse :
a),, SRTM '' are not full

b),, It is a problem with Locus

What i mean. It is going about ,,DYNAMICAL ATTITUDE''. All screens are from Pic du Midi di Biggore region-Pyrenees. ( but in Alps i saw the same problem)
When i tap a screen normally i see attitude like this

or

But sometimes i see ,,0'' like this

The text at the botton (in polish) means ,, For one point it is impossible to corectly calculate attiude''
Normally we doesn't care about this but...
when we want to calculate ( or create) route and see Chart, descent and ascent of created route it can be a little problem.See this Chart ( with holes) of calculated ( by internet) route

and what's more
INFORMATION details see

Total ascent 15000 m.....

? It is a long climb (This is climb to Midi di Biggore ( Col de Tourmalet is on the road)), but of course
ascent will be less then 2000m not 15000 it is impossible.
The additional 13000m is becouse of points of the road where Locus ( or SRTM) could not calculate attitude ( 53 points)

( For 53 points it was impossible to corectly calculate attitude)
I tried to see the same map in TwoNav with Europa DEM and in this same part of the map i always get ,,normal'' attitude ( no 0) like this

I dont know where is the problem?
.