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چکیده
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In this study filed survey led us to the discovery of a cave which latter named as “Tuzhal” or “Aso” in Sardasht, northwest of Iran. In fact, a hole as wide as 20 cm was the only entrance of the cave appeared from outside. The entrance was carved and a team including three persons entered the cave in order to evaluate its dimensions. The discovery of unknown parts was then started. Further geomorphological survey in the area revealed more holes distributed as far as 5km around the original hole which are suspicious to be avens of the same cave. The evidence proved that there is a junction between this cave and avens. Further caving by professionals is needed to recognize all parts of the cave.
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