Sentence 1: Jimmy was always exploring the country. 
 Sentence 3: Sometimes he would get into trouble and had to wait for rescue 
 Sentence 4:  His wife worried about him when he didn't call during those times 
 Sentence 5:  Despite that she still loved him and helped him plan expeditions 
 Option 1: He found whatever mountain or valley he could and tromped all over. 
 Option 2: He found many mountains and valleys and researched them before going to see them.