| A | B |
|---|
| strenuous | requiring vigorous effort |
| switchback | road or trail that ascends a steep incline with a zigzag course |
| toll | a fixed tax or fee |
| sheer | perpendicular |
| exhasutive | thorough and tiring; taking all you've got |
| stalactites | a downward mineral deposit from the roof of a ccavern |
| stalagmites | an upward mineral deposit from the floor oa a cavern |
| crouched | to bend over close to the ground |
| outcrop | a formationgoing through the soil level |
| pelting | to strike with a series of blows |
| occur | to happen |
| auditor | one who examines |
| genuine | real or authentic |
| enormous | bery great in size |
| beige | light grayish brown |
