Sam could recognize the table and he could vaguely speculate the actual functions of it.
But the problem is there is a large layered formation around the table. There is no way for it to actually open before the formation is not cleared. Sam checked the formation and it is similar to the ones above, except that there are around ten layers on this formation.
As he was observing, he noticed that Raiju is running towards them. It can sense Sam's presence and can easily find a way; it gave a message of finding a cave too.
Sam decided to check that on before dealing with this. So, he went there and started checking another cave, and there too, there is a circular table covered by large formations around them.
After looking at them, Sam walked out and decided to wait at the meeting point and when all of them gathered, they got the news that there are four such caves in the valley in total, and all four of them have the same things inside.