| Cover | May 20, 2022 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 20, 2022 |
| Entity File Number | 001-40872 |
| Entity Registrant Name | Avalon Acquisition Inc. |
| Entity Central Index Key | 0001836478 |
| Entity Tax Identification Number | 85-3451075 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 2 Embarcadero Center |
| Entity Address, Address Line Two | 8th Floor |
| Entity Address, City or Town | San Francisco |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94111 |
| City Area Code | (415) |
| Local Phone Number | 423-0010 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Units, each consisting of one share of Class A common stock, par value $0.0001 per share and three-fourths one redeemable warrant | |
| Title of 12(b) Security | Units, each consisting of one share of Class A common stock, par value $0.0001 per share and three-fourths one redeemable warrant |
| Trading Symbol | AVACU |
| Security Exchange Name | NASDAQ |
| Class A common stock, par value $0.0001 per share | |
| Title of 12(b) Security | Class A common stock, par value $0.0001 per share |
| Trading Symbol | AVAC |
| Security Exchange Name | NASDAQ |
| Redeemable warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50 per whole share | |
| Title of 12(b) Security | Redeemable warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50 per whole share |
| Trading Symbol | AVACW |
| Security Exchange Name | NASDAQ |
