Alaska · Area of Critical Environmental Concern
Serpentine Slide RNA
BLM found a natural system here, and its plan calls for special management. Nothing that BLM's records place sits inside the line today. It covers 4,749 acres and was designated February 6, 1986, in the Eastern Interior RMP - White Mountains ROD. In the plan's name, RMP stands for resource management plan and ROD for record of decision.
One of the 1,120 places the Bureau of Land Management has designated an Area of Critical Environmental Concern. This page shows its line, what BLM found there and what sits inside it.
The line
Ground: USGS The National Map, topographic tiles. Boundaries: BLM's own, read Oct 20, 2026.Inside the line
Nothing sits inside this line that BLM's records place: no mining claim, lease or right of way. BLM's allotment map doesn't cover Alaska.
The nearest areas
- Limestone Jags RNAAlaska · 4,884 acres · nothing placed inside12miles
- Mount Prindle (WMNRA) RNAAlaska · 3,091 acres · nothing placed inside33miles
- Mount Prindle (SNCA) RNAAlaska · 2,847 acres · nothing placed inside34miles
- Big Windy Hot Spring RNAAlaska · 151 acres · nothing placed inside92miles
- Kanuti Hot Springs ACECAlaska · 43 acres · nothing placed inside104miles
More from BLM's Alaska office
Every area BLM's Alaska office holdsThe proposed rule
A proposed rule, RIN 1004-AF53, would change how BLM drafts every land use plan, and how it designates ACECs like Serpentine Slide RNA. The comment window hasn't opened: the proposed rule wasn't in the Federal Register at our last check. The Watch sends one email the day it prints.
The rule's abstract
The purpose of this rulemaking is to establish in regulations an updated process for the approval of the development, revision, amendment, and maintenance of land use plans, as provided for by the Federal Land Policy and Management Act of 1976, for public lands administered by the Bureau of Land Management (BLM). Additionally, this rulemaking will provide clarification of the process the BLM uses for designating Areas of Critical Environmental Concern.Unified Agenda entry for RIN 1004-AF53, Publication ID 2026, reginfo.gov (OMB OIRA), read Oct 18, 2026