Membership - Contributing
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Contributing memberships receive free admission during membership year, invitations to special events, yearly membership pin and informational newsletters delivered via email plus a 20% discount in The Mammoth Site gift shop,and ten complimentary passes. Minimum donation for Contributing level is $150.00. Should you wish to make an additional donation please use the Individual Contributions offering found in the donations category. If you prefer to not receive the membership pin, that option is available when you place your order.