Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 1
Situational Awareness; Troubleshooting; Workload
ATC Issue All Types; Conflict Airborne Conflict; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance; Air Traffic Control Provided Assistance
Environment - Non Weather Related; Airspace Structure; Airport; Human Factors
Aircraft X was VFR; flew through the departure area at 13;000; where aircraft climb to 16;000 then through the final at a point where arrivals cross through that altitude on descent.  Aircraft Y had to be vectored off the approach path to avoid conflict.  Aircraft Z had to be kept higher than normal to avoid the conflict and was high entering the approach; making it difficult to get to the airport.Aspen has the difficulty of high mountains and high MVA's; aircraft have limited availability to stop climbs; descents on final are through narrow corridors and the approach path is steep.  VFR aircraft not in communication with ATC are a safety risk because we cannot know their intentions; verify altitude or issue control instructions to avoid conflict.  Aspen needs controlled airspace that requires 2 way communication.
Aspen Tower Controller reported problems associated with aircraft in relationship to the high terrain and high MVA's surrounding the airport.