Helpful items for your packing list:
- clothes (including spring/autum jacket for cooler evenings, especially during months of May-August, when temperature can drop near zero degrees at night)
- comfortable shoes (including hiking shoes)
- sun glasses
- sun-screen lotion
- binoculars
- camera
- personal medicaments
- sun hat
For a self-drive/camping tour (besides mentioned above):
- good walking/hiking shoes
- small pillow
- torch or headlamp