Can anyone identify these eggs ?

[chunky]

Came across these in Sakai cave in Mulu, was wondering if anyone could identify what they are?

 

[mr goose]

We saw some similar looking eggs just inside a cave entrance in the Philippines recently. A local guide was with us who we think said they were gecko eggs but her English wasn't great, so not sure?

 

[chunky]

We saw some similar looking eggs just inside a cave entrance in the Philippines recently. A local guide was with us who we think said they were gecko eggs but her English wasn't great, so not sure?

Thanks Mr Goose, was thinking Gecko myself 

 

[Martin Laverty]

Gecko eggs (presumably fallen off ceiling on hatching). Like these from inside a cave entrance in southern Sarawak: https://www.inaturalist.org/observations/25749708

PS There were some pictures on this forum a few years ago when they were first suspected of being some sort of mineralised bubbles, but I Haven't been able to relocate them...