I will be visiting Great Basin in a couple of weeks. I was planning on hiking the Bristlecone Pine Grove trail at the foot of Wheeler Peak. From my understanding, there is a fairly easy Bristlecone trail. I do have a fear of heights, so I wanted to double check the type of hike this is. I am fine with being up high. I just do not like the sharp drop offs or cliffs. Are the trails fairly okay with this? What about the rest of that hike toward the glacier? Is this still fairly moderate and cliff free? I am going with a friend, who is a pretty skilled hiker, so I would not be alone. Still, I want to make sure this is something I can do. Any tips on this hike? How cold does this area get in the summer? I know there is some snow toward the top during July sill. Also, I am supposed to meet him at the visitor center as he will be camping and I will be at a hotel (Stargazer inn). I will have the car that night, but as noted, I have the fear of heights. I know I am literally less than a mile away from the visitor center, but I wanted to make sure there is no real issue with heights in the drive in. Once I am to the visitor center and we explore the national park, he will be driving and I am fine in the passenger seat.