Gundog1, I'd be interested to know if there was anywhere that had a SID but no navaids....
Sounds like you, like a lot of people with instrument ratings were never taught how to depart in IMC; only how to arrive.
It's the pilots responsibility to maintain terrain clearance. In the situation you presented, you could hit OBS on your GPS and climb to LSALT overhead, or climb out on a pilot calculated LSALT. If it had an RNAV approach or DGA, you could also climb on the reverse of the approach, or the missed approach.