Which network is mantle on?

Could you please elaborate on the question "Which network is mantle on?"? I'm curious to understand what you mean by "mantle" in this context, as it's not a common term in cryptocurrency or finance. Are you referring to a specific blockchain network, a technological layer, or perhaps a service or application? Additionally, it would be helpful if you could provide some background or context related to this question, so I can provide a more accurate and informative response. Thank you for clarifying!