j-weil

@dponti I agree to distinguish between those two. For the "observation", I would consider the locality, shape, extend... more important, e.g. a mapped structure or occurence of a certain material,...

Agreed that there is a range of ways to collect insight to ground conditions from artificial outcrops, from boreholes over trial pits (being documented more or less detailed) over trenches...

@mbeaufils Correct. The important point is what the type of information is: A linear profile is a very common way to log a test pit, so it can be modelled...