Adjustable bagging tunnel

An adjustable tunnel of a mobile bagging machine, the tunnel comprising:

• an expandable base having first and second ends, the expandable base having collapsed and expanded configurations, wherein a distance between the first end and the second end is less in the collapsed configuration than in the expanded configuration;
• a central arch panel disposed above the expandable base, wherein the central arch panel is vertically and continuously movable between first and second positions;
• a first side panel having a first side panel base coupled to the expandable base at the first end;
• a second side panel having a second side panel base coupled to the expandable base at the second end;
• a first intermediate panel disposed between the central arch panel and the first side panel;
• a second intermediate panel disposed between the central arch panel and the second panel;
• and
• a surface tensioning assembly disposed about the first and second side panels, the first and second intermediate panel, and the central arch panel,
• an end panel assembly comprising a lower end panel coupled to a bulkhead and an upper end panel connected to the central arch panel, wherein the lower end panel and the upper end panel are vertically movable relative to one another, wherein a height of the central arch panel varies between the first and second configurations.