1. Some artifacts may offer very little evidence
2. The exercise is too expensive
3. It's dangerous and tedious. Animals like wild dogs can attack scientists
4. Identification of the site is not easy because artifacts are buried
5. Artifacts can be destroyed in the process of digging
6. Dating of fossils is difficult
7. Personnel are few hence more work
8. Poor infrastructure in rural areas where their researches are mainly based
9. Archaelogist may suffer from diseases caused by changes in climate
10. Sometimes the climate of their residence differ from that of the place they are taking research. This creates discomfort
johnmulu answered the question on February 1, 2017 at 14:21
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