Stand · Find your defenders

Who’s defending Mark Twain?

3 groups have it in their care

National forest in Missouri, 1.5M acres, managed by the U.S. Forest Service, designated in 1939.

The defenders

The groups doing the most work here

3 groups are on the record for Mark Twain, each tied to it by a source our editors read, in the order they carry the weight. Give directly; nothing routes through us.

On the ground

Also in the fight

The situation

What’s happening to Mark Twain

The Ozarks’ last big public forest. 1.5 million acres of springs, caves, and hardwood ridges in a state where public land is scarce and every acre matters. Lead mining has scarred this landscape for a century, and new extraction proposals and aggressive timber targets threaten the streams communities depend on for clean water. Now the Forest Service wants to hand 2,616 acres of it to Doe Run, the lead mining company, and take about 354 acres of Doe Run land in return. Seven acres of public forest out for every one acre in. The decision is close and the only step left is an objection period open to people who already commented.

  1. 1939Established as national forest
  2. 2026Objection period opens on the 2,616-acre Doe Run land exchange
  3. 2026Objection period closes
Forest Service moves to trade 2,616 acres to a lead mining company

Source: USDA Forest Service · July 29, 2026

Increased timber harvest targets

Source: KSDK

Lead and critical mineral mining proposals

Source: BLM

No public comment window is open on Mark Twain right now. A call script is ready on the Public Lands Action Network, and the groups above are how the fight gets funded and argued in the meantime.

Your move

How to stand for Mark Twain

Build my lineup around Mark Twain: the leading group here opens it, and the other seats fill from this record.

Mark Twain has defenders. It needs more.

3 groups on the record, Sierra Club with 10,895 volunteers. That is who is holding it. Find your way in.

Sources and methodThe situation, timeline, and threats: the MTJP threatened-lands record for Mark Twain, with per-item sources. Group crews and program ratios: IRS Form 990 via ProPublica Nonprofit Explorer, latest filed year, EINs on each group’s profile. Which groups are on the record for this place: MTJP editors tie a group to a fight only with a source link they have read, one link at a time. A group without one is shown as likely to care, a guess from the federal court record and the group’s own mission and footprint. Org-reported figures are always labeled. Data verified as of 2026-10-03. Nothing on this page is pay-to-play.