Can river rocks be used in fire pit?

Yes, river rocks can be used in a fire pit, but it's important to ensure they are dry and not porous. Wet or porous rocks can trap moisture, which may lead to cracking or exploding when heated. Additionally, it's advisable to avoid using limestone or other types of rock that can produce harmful gases when exposed to high temperatures. Always check local guidelines and consider using fire-rated materials for the safest fire pit construction.