Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Jun. 30, 2014	Mar. 20, 2014
Document and Entity Information
Entity Registrant Name	Thunder Mountain Gold Inc
Document Type	10-K
Document Period End Date	Dec. 31, 2014
Amendment Flag	false
Entity Central Index Key	0000711034
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Entity Common Stock, Shares Outstanding			40,167,549
Entity Public Float		$ 1,995,877