> For the complete documentation index, see [llms.txt](https://docs.echelon.market/echelon/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.echelon.market/echelon/core/cross-chain-deposits/bridges.md).

# Bridges

Echelons smart contracts are currently running on Aptos. To interact with the protocol, users must bridge over assets over from other chains. The bridge page assists users in this via integrations with two of the largest cross chain bridging providers. 

1. [Layerzero Bridge](https://layerzero.network/)

The LayerZero bridge is the recommended for bridging between Aptos and other chains such as Ethereum, Solana, Polygon, Arbitrum, Avalanche, and Optimism. This bridge requires you to have destination gas in order for the transaction to go through.

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXe9KNPDV3Uif9XUjtFKwKQymlvOlwX567oh0dpkjCFCMuUDBPIMtRzwdCVRTJbPvt4_lIIPTUezAqIdlwwmyRZWKNL5WxQAJiZYZ1MtNJyfjOqqrz8RbR-2Ubz0REb8HiiRYnsSA0cywf7AZaAULRPhvkc?key=AAZjMzQeps8rbq7j72AJ0Q" alt=""><figcaption></figcaption></figure>

2. [Wormhole Bridge](https://wormhole.com/)

The Wormhole bridge is recommended for bridging between Aptos and Sui. This bridge requires the payment of gas fees to process transactions. <br>

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXfsik0ZTbkVU4CHAJL0riel7HAOgmO51LeunmG-FXjdfRmbq_-avmBL_psErUyZP4FfbJImzgHOLFY7O5tsl2TcZCS_HJ7v6GCobCNMg3tFA2qOfTibhomVxxfWXZugku4-zWwx1sOBjS-N5_Mhc3egJQsB?key=AAZjMzQeps8rbq7j72AJ0Q" alt=""><figcaption></figcaption></figure>