ghe'tor lojmIt'a'Daq
'Iw bIQtIq ghoS
naDevvo' chegh pagh
(paq'raD Prologue, 22-24)
In *boQwI'* we read about *ghoS*: /This can mean either *approach* or *go away from* depending on the presence of nouns with the suffixes *-Daq* and *-vo'*. The way to use *ghoS* and other verbs of movement are described in HQ 7.4[2]. See *jaH* for details./
And in the entry *jaH*: /If the verb prefix indicates an object, then the subject is going to a destination associated with the object, which may be marked with *-Daq*. If the verb prefix indicates no object, then the destination is unspecified. In that case, a noun marked with *-Daq* indicates the location where the *going* is taking place./
The problem for me is that we have a noun phrase with *-Daq* (*ghe'tor lojmIt'a'Daq), an object without *-Daq* (*'Iw bIQtIq*) and a verb in third person singular (with the null prefix). Is it possible that a verb of movement has a noun phrase with *-Daq* *AND* an object (with or without *-Daq*)? But then I would understand something like: He approches the river of blood and this movement happens at (the area of) the Gre'thor gates, which doesn't make much sense. I would have expected it the other way around (approching the gates, moving in the river). I just can't understand how grammar is working here. Or am I missing something?
boQwI' can give a good basic explanation, but it can't account for every situation. (It's also not something one should cite as a source, so thank you for quoting its own citation of HolQeD.)
ghoS has an underlying meaning something like follow a course, move along a path. Its object is a location or other identifier for the path. Sometimes that's the destination, sometimes it's the origin, and sometimes it's just a name for the path. So 'Iw bIQtIq ghoS means follow the river of blood, and in this case the preceding ghe'tor lojmIt'a'Daq is most reasonably interpreted as where the path leads (i.e. the destination).
-- ghunchu'wI'