A young ladies squatting at hillside sipping on a drink the other one with the white purse is talking pictures.
A group of hikers pause for a break.
Not all young ladies are hikers.A young ladies squatting at hillside sipping on a drink the other one with the white purse is talking pictures doesn't imply they pause for a break.
Sentence 1 makes no mention of hikers taking a break. Sentence 1 doesn't make much sense at all really...
A group of people on a hillside are not necessarily hikers.